Reason for Proposed Changes

• TestCounter_Start randomly failed due to race condition and off-by-one error;

Proposed Changes

• Corrected the number of expected progress updates (from 10 to 9);
• Ensured process completes before verifying results;
• Fixed a wrong increment in Start() caused by the progress channel closing.

Example Error
=== RUN TestCounter_Start/test_counter_progress_bar
counter_progress_test.go:52:
Error Trace: /home/runner/work/kics/kics/pkg/progress/counter/counter_progress_test.go:52
Error: Not equal:
expected: 9
actual : 10
Test: TestCounter_Start/test_counter_progress_bar

I submit this contribution under the Apache-2.0 license.