deps(ci): bump tailscale/github-action from 4.1.1 to 4.1.2

Bumps [tailscale/github-action](https://github.com/tailscale/github-action) from 4.1.1 to 4.1.2.
- [Release notes](https://github.com/tailscale/github-action/releases)
- [Commits](tailscale/github-action@53acf82...306e68a)

---
updated-dependencies:
- dependency-name: tailscale/github-action
  dependency-version: 4.1.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/codecov.yml

@@ -21,7 +21,7 @@ jobs:
 
       - name: Connect to Tailnet
         if: github.event_name != 'pull_request' || github.event.pull_request.head.repo.full_name == github.repository
-        uses: tailscale/github-action@53acf823325fe9ca47f4cdaa951f90b4b0de5bb9 #v4.1.1
+        uses: tailscale/github-action@306e68a486fd2350f2bfc3b19fcd143891a4a2d8 #v4.1.2
         with:
           args: --accept-dns=true
           oauth-client-id: ${{ secrets.TS_OAUTH_CLIENT_ID }}