Bump andymckay/append-gist-action from 0.2 to 0.3

Bumps [andymckay/append-gist-action](https://github.com/andymckay/append-gist-action) from 0.2 to 0.3.
- [Release notes](https://github.com/andymckay/append-gist-action/releases)
- [Commits](andymckay/append-gist-action@6e8d644...ab30bf2)

---
updated-dependencies:
- dependency-name: andymckay/append-gist-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/publishTestResults.yml

@@ -81,7 +81,7 @@ jobs:
 
       - name: Upload badge to Gist
         if: github.ref == 'refs/heads/master' && inputs.gist-url != ''
-        uses: andymckay/append-gist-action@6e8d64427fe47cbacf4ab6b890411f1d67c07f3e
+        uses: andymckay/append-gist-action@ab30bf28df67017c7ad696500b218558c7c04db3
         with:
           token: ${{ secrets.gist-token }}
           gistURL: ${{ inputs.gist-url }}