fix(#174): remove invalid top-level return 0 load guard from github-api-csma.sh - #298

No file matched to [/home/runner/work/fullsend/fullsend/**/*requirements*.txt,/home/runner/work/fullsend/fullsend/**/*requirements*.in,/home/runner/work/fullsend/fullsend/**/*constraints*.txt,/home/runner/work/fullsend/fullsend/**/*constraints*.in,/home/runner/work/fullsend/fullsend/**/pyproject.toml,/home/runner/work/fullsend/fullsend/**/uv.lock,/home/runner/work/fullsend/fullsend/**/*.py.lock]. The cache will never get invalidated. Make sure you have checked out the target repository and configured the cache-dependency-glob input correctly.