Merge submodules - #148

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@v4, actions/checkout@v4, actions/upload-artifact@v4. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Failed to save: "/bin/tar" failed with error: The process '/bin/tar' failed with exit code 1

Failed to save: "/bin/tar" failed with error: The process '/bin/tar' failed with exit code 1

No file matched to [/__w/brawl/brawl/**/*requirements*.txt,/__w/brawl/brawl/**/*requirements*.in,/__w/brawl/brawl/**/*constraints*.txt,/__w/brawl/brawl/**/*constraints*.in,/__w/brawl/brawl/**/pyproject.toml,/__w/brawl/brawl/**/uv.lock,/__w/brawl/brawl/**/*.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.