Bump cbrgm/mastodon-github-action from 1 to 2 (#722)

Bumps [cbrgm/mastodon-github-action](https://github.com/cbrgm/mastodon-github-action) from 1 to 2.
- [Release notes](https://github.com/cbrgm/mastodon-github-action/releases)
- [Commits](cbrgm/mastodon-github-action@v1...v2)

---
updated-dependencies:
- dependency-name: cbrgm/mastodon-github-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release-toot.yml

@@ -10,7 +10,7 @@ jobs:
   toot:
     runs-on: ubuntu-latest
     steps:
-      - uses: cbrgm/mastodon-github-action@v1
+      - uses: cbrgm/mastodon-github-action@v2
         if: ${{ !github.event.repository.private }}
         with:
           # GitHub event payload