⬆️ Bump actions/create-github-app-token from 2.0.6 to 2.2.1

Bumps [actions/create-github-app-token](https://github.com/actions/create-github-app-token) from 2.0.6 to 2.2.1.
- [Release notes](https://github.com/actions/create-github-app-token/releases)
- [Commits](actions/create-github-app-token@df432ce...29824e6)

---
updated-dependencies:
- dependency-name: actions/create-github-app-token
  dependency-version: 2.2.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/publish-docs.yml

@@ -42,7 +42,7 @@ jobs:
 
       - name: 🔑 Create GitHub App token (mkdocs)
         id: mkdocs_token
-        uses: actions/create-github-app-token@df432ceedc7162793a195dd1713ff69aefc7379e # v2.0.6
+        uses: actions/create-github-app-token@29824e69f54612133e76f7eaac726eef6c875baf # v2.2.1
         with:
           app-id: ${{ secrets.MKDOCS_APP_ID }}
           private-key: ${{ secrets.MKDOCS_PEM }}