Add requirements-test-latest.txt pinning the newest published
pytest-homeassistant-custom-component (0.13.316, HA 2026.2.3, Python
3.13) and run the workflow as a matrix over both requirement files. No
DNS-library pin is needed for the newer release. Both environments pass
scripts/check.sh locally, with no HA deprecation warnings logged for
this integration. Remote runner execution is still unverified.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>