- Remove 'cache: pip' from setup-python in lint, typecheck, test jobs to fix
intermittent 'archive/tar: write too long' errors on act_runner pods
- Add CARTSNITCH_SERVICE_KEY and CARTSNITCH_FERNET_KEY to test job env
to satisfy Settings pydantic model requirements
Co-Authored-By: Paperclip <noreply@paperclip.ing>