v21.1.0
.github/workflows/releng-audit: update python to 3.12
CODEOWNERS: add an smb group for various smb related files
copilot: add GitHub Copilot instructions
dependabot: stop dashboard npm upgrade PRs
mgr: isolated CherryPy to prevent global state sharing
.github/milestone: add umbrella
doc: github: add a note reminding to use one command per comment