This requires creating a new major-version (v4) of codeql-action.

I got ahead of myself; v4 hasn't been tagged yet.

Co-authored-by: Henry Mercer <henrymercer@github.com>

Mergeback v3.30.6 refs/heads/releases/v3 into main

Make `matrix` available to `start-proxy` action

# Conflicts:
#	lib/analyze-action-post.js
#	lib/analyze-action.js
#	lib/autobuild-action.js
#	lib/init-action-post.js
#	lib/init-action.js
#	lib/resolve-environment-action.js
#	lib/start-proxy-action-post.js
#	lib/start-proxy-action.js
#	lib/upload-lib.js
#	lib/upload-sarif-action-post.js
#	lib/upload-sarif-action.js
#	package-lock.json
#	package.json

[v4] Upgrade Node.js runtime from v20 to v24