…y member (#3915)

Currently, if a community PR is opened, the`KNAPSACK_PRO_TEST_SUITE_TOKEN_RSPEC` secret will not be set. This will cause the specs to fail with an error as we are not able to run Knapsack Pro in this case.

This is not an ideal situation as it will complexify the contribution process.

The specs will now run sequentially in the CI workflow if the `KNAPSACK_PRO_TEST_SUITE_TOKEN_RSPEC` secret is not set.

…#3915)

## Context

Currently, if a community PR is opened, the`KNAPSACK_PRO_TEST_SUITE_TOKEN_RSPEC` secret will not be set. This will cause the specs to silently fail on the CI and potentially break `main`:

```
Run bundle exec rake knapsack_pro:queue:rspec
E, [2025-07-02T09:39:24.571116 #3735] ERROR -- : [knapsack_pro] {"errors" => ["invalid test suite token"]}

Finished in 0.45262 seconds (files took 5.69 seconds to load)
0 examples, 0 failures

E, [2025-07-02T09:39:24.572334 #3735] ERROR -- : [knapsack_pro] An unexpected exception happened. RSpec cannot handle it. The exception: #<NoMethodError: undefined method 'response' for an instance of KnapsackPro::Client::Connection>
E, [2025-07-02T09:39:24.572368 #3735] ERROR -- : [knapsack_pro] Exception message: undefined method 'response' for an instance of KnapsackPro::Client::Connection
E, [2025-07-02T09:39:24.572463 #3735] ERROR -- : [knapsack_pro] Exception backtrace: /home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/queue_allocator.rb:12:in 'KnapsackPro::QueueAllocator::Batch#initialize'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/queue_allocator.rb:105:in 'Class#new'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/queue_allocator.rb:105:in 'KnapsackPro::QueueAllocator#pull_tests_from_queue'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/queue_allocator.rb:47:in 'KnapsackPro::QueueAllocator#test_file_paths'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/runners/queue/base_runner.rb:29:in 'KnapsackPro::Runners::Queue::BaseRunner#test_file_paths'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/runners/queue/rspec_runner.rb:181:in 'KnapsackPro::Runners::Queue::RSpecRunner#pull_tests_from_queue'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/runners/queue/rspec_runner.rb:82:in 'block in KnapsackPro::Runners::Queue::RSpecRunner#with_batch'
<internal:kernel>:168:in 'Kernel#loop'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/runners/queue/rspec_runner.rb:80:in 'KnapsackPro::Runners::Queue::RSpecRunner#with_batch'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/extensions/rspec_extension.rb:93:in 'block (2 levels) in KnapsackPro::Extensions::RSpecExtension::Runner#knapsack__run_specs'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rspec-core-3.13.2/lib/rspec/core/configuration.rb:2097:in 'RSpec::Core::Configuration#with_suite_hooks'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/extensions/rspec_extension.rb:92:in 'block in KnapsackPro::Extensions::RSpecExtension::Runner#knapsack__run_specs'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rspec-core-3.13.2/lib/rspec/core/reporter.rb:74:in 'RSpec::Core::Reporter#report'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/extensions/rspec_extension.rb:91:in 'KnapsackPro::Extensions::RSpecExtension::Runner#knapsack__run_specs'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/runners/queue/rspec_runner.rb:55:in 'KnapsackPro::Runners::Queue::RSpecRunner#run'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/knapsack_pro/runners/queue/rspec_runner.rb:20:in 'KnapsackPro::Runners::Queue::RSpecRunner.run'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/knapsack_pro-8.1.0/lib/tasks/queue/rspec.rake:12:in 'block (3 levels) in <main>'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/task.rb:281:in 'block in Rake::Task#execute'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/task.rb:281:in 'Array#each'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/task.rb:281:in 'Rake::Task#execute'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/task.rb:219:in 'block in Rake::Task#invoke_with_call_chain'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/task.rb:199:in 'Monitor#synchronize'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/task.rb:199:in 'Rake::Task#invoke_with_call_chain'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/task.rb:188:in 'Rake::Task#invoke'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:188:in 'Rake::Application#invoke_task'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:138:in 'block (2 levels) in Rake::Application#top_level'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:138:in 'Array#each'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:138:in 'block in Rake::Application#top_level'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:147:in 'Rake::Application#run_with_threads'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:132:in 'Rake::Application#top_level'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:83:in 'block in Rake::Application#run'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:214:in 'Rake::Application#standard_exception_handling'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/lib/rake/application.rb:80:in 'Rake::Application#run'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/gems/rake-13.2.1/exe/rake:27:in '<top (required)>'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/bin/rake:25:in 'Kernel#load'
/home/runner/work/lago-api/lago-api/vendor/bundle/ruby/3.4.0/bin/rake:25:in '<main>'
Stopped processing SimpleCov as a previous error not related to SimpleCov has been detected
Coverage report generated for RSpec to /home/runner/work/lago-api/lago-api/coverage. 0 / 0 LOC (100.0%) covered.
```

See an example here: https://github.com/getlago/lago-api/actions/runs/16020160377/job/45199719035.

## Description

This commit adds a check to fail the CI workflow if the `KNAPSACK_PRO_TEST_SUITE_TOKEN_RSPEC` secret is not set to ensure we run the specs before merging the PR.