Bump actions/create-github-app-token from 2.1.1 to 2.1.4 (#10554)

Bumps [actions/create-github-app-token](https://github.com/actions/create-github-app-token) from 2.1.1 to 2.1.4.
- [Release notes](https://github.com/actions/create-github-app-token/releases)
- [Commits](actions/create-github-app-token@a8d6161...6701853)

---
updated-dependencies:
- dependency-name: actions/create-github-app-token
  dependency-version: 2.1.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/backport.yml

@@ -25,7 +25,7 @@ jobs:
         )
       )
     steps:
-      - uses: actions/create-github-app-token@a8d616148505b5069dccd32f177bb87d7f39123b # v2.1.1
+      - uses: actions/create-github-app-token@67018539274d69449ef7c02e8e71183d1719ab42 # v2.1.4
         id: app-token
         with:
           app-id: ${{ vars.BACKPORT_APP_ID }}