ci: bump the github-actions group across 1 directory with 2 updates

Bumps the github-actions group with 2 updates in the / directory: [actions/create-github-app-token](https://github.com/actions/create-github-app-token) and [korthout/backport-action](https://github.com/korthout/backport-action).


Updates `actions/create-github-app-token` from 3.1.1 to 3.2.0
- [Release notes](https://github.com/actions/create-github-app-token/releases)
- [Changelog](https://github.com/actions/create-github-app-token/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/create-github-app-token/compare/v3.1.1...v3.2.0)

Updates `korthout/backport-action` from 4.5.1 to 4.5.2
- [Release notes](https://github.com/korthout/backport-action/releases)
- [Commits](bf97bcfb53...6606540695)

---
updated-dependencies:
- dependency-name: actions/create-github-app-token
  dependency-version: 3.2.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: github-actions
- dependency-name: korthout/backport-action
  dependency-version: 4.5.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

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

.github/workflows/backport.yml

@@ -18,7 +18,7 @@ jobs:
         with:
           persist-credentials: true
 
-      - uses: actions/create-github-app-token@v3.1.1
+      - uses: actions/create-github-app-token@v3.2.0
         id: app-token
         with:
           app-id: ${{ vars.BACKPORT_APP }}
@@ -26,7 +26,7 @@ jobs:
 
       - name: Create backport PR
         id: backport
-        uses: korthout/backport-action@bf97bcfb53d5250af8b9a15fab0f56158a63b224 # v4.5.1
+        uses: korthout/backport-action@66065406958f46e82238fd59546f5a99e69e22aa # v4.5.2
         with:
           pull_title: "backport: ${pull_title}"
           label_pattern: "^ci:backport ([^ ]+)$"