fix(scripts): add timeout and status handling to GitHub workflow cancellation script

[outwrit]

SUMMARY

Fixes #2

The request() helper in scripts/cancel_github_workflows.py called requests.request() without a timeout and assumed every response body was valid JSON. This could hang indefinitely in CI/local usage or produce confusing JSONDecodeError tracebacks when the API returned non-2xx with a non-JSON body.

Changes to request():

• Add REQUEST_TIMEOUT = 30 (seconds) to every API call
• Call resp.raise_for_status() before consuming the body
• Handle requests.exceptions.Timeout → ClickException("… request timed out …")
• Handle requests.exceptions.HTTPError → extract GitHub message from JSON when available, fall back to resp.text
• Handle empty response bodies (e.g., 202 from the cancel endpoint) → return {}
• Handle non-JSON success bodies → ClickException("… invalid JSON …")
• Remove # noqa: S113 (no longer needed)

Existing Click CLI behavior and error style are preserved.

BEFORE/AFTER SCREENSHOTS OR ANIMATED GIF

N/A — script-only change

TESTING INSTRUCTIONS

python -m py_compile scripts/cancel_github_workflows.py
python -m pytest tests/unit_tests/scripts/cancel_github_workflows_test.py -v --noconftest --rootdir=tests/unit_tests/scripts
ruff check scripts/cancel_github_workflows.py tests/unit_tests/scripts/cancel_github_workflows_test.py
pre-commit run mypy --files scripts/cancel_github_workflows.py

Validation results:

• py_compile: passed
• pytest: 7/7 passed
• ruff check + ruff format --check: passed
• mypy (script only): passed
• pre-commit run (all hooks except mypy): all passed

ADDITIONAL INFORMATION

• Has associated issue: Add timeouts and status handling to GitHub workflow cancellation script #2
• Required feature flags:
• Changes UI
• Includes DB Migration
• Introduces new feature or API
• Removes existing feature or API