Fixed upstream

As per https://develop.sentry.dev/sdk/telemetry/logs/#default-attributes
we should be using `sentry.message.parameter` (singular) instead of
`sentry.message.parameters`. This matches how we approach the other
attributes in our conventions.

- pyspark was failing to bind to an address
- aws_lambda fixed itself 🪄

When using the RedBeatScheduler, we're sending an extra in-progress
check-in at scheduler start. Since this is never followed by an ok or
error check-in, the check-in is marked as timed out in Sentry.

We're patching the scheduler's `maybe_due`, which (as the name implies)
[might not end up executing the
task](https://github.com/sibson/redbeat/blob/bdefad23b47f75e2e85d45f46f9f16dd00a93d40/redbeat/schedulers.py#L506-L508).
This is indeed what seems to be happening -- `maybe_due` is run when the
scheduler starts, but without scheduling the task. We don't check
whether `maybe_due` actually ended up scheduling anything and always
fire an in-progress check-in.

Patching the [scheduler's
`apply_async`](https://github.com/sibson/redbeat/blob/bdefad23b47f75e2e85d45f46f9f16dd00a93d40/redbeat/schedulers.py#L511)
instead.

Closes #4392

This commit enables the `keep_alive` option to be set via the
`SENTRY_KEEP_ALIVE` environment variable. When both the environment
variable and the argument are provided, the argument takes precedence.

Closes #4354

…4399)

We shouldn't have setup code in an integration's `__init__`. This can be
called an arbitrary amount of times. `setup_once` exists so that the
code is only guaranteed to run once.

Having integration setup in `__init__` also means that the integration
currently can't be disabled via `disabled_integrations`.

Fixes #4398

We need to send `warn` as the `severity_text` for warning level logs,
not `warning`.
If we send `warning` it will not be recognized by the backend and the
severity will show up as `UNKNOWN` in the frontend.
See screenshot for comparison of after and before.

![Screenshot 2025-05-16 at 18 24
50](https://github.com/user-attachments/assets/240e3c6d-0f68-49e8-b79b-a67ac0e8a5d4)