zizmor's self-repository audit flags every `uses: ./.github/...` reference
now that GitHub has a dedicated `$/` form. The `$/` form resolves against the
workflow's own commit rather than the runtime checkout, so it cannot load an
action cloned into the workspace at runtime, and GitHub treats it as pinned.
Rewrites all 22 references (18 local actions, 4 reusable workflow calls).
With the `$/` form the runner downloads the whole repository as an action
archive at job setup, and that download fails on any broken symlink in the
tree. The four broken symlinks were all test fixtures: the directory-fetcher
and cafs tests now copy their fixture into a temp dir and create the broken
symlink there, and the has-not-outdated-deps fixture drops two dangling
node_modules links that `pnpm outdated` never followed.
pnpm's GitHub Actions dependency discovery only followed `./` references
into local actions and reusable workflows; both stacks now follow `$/` too.
Zoltan Kochan
28bb2a339b