Merge pull request #14241 from NixOS/dependabot/github_actions/actions/create-github-app-token-2

build(deps): bump actions/create-github-app-token from 1 to 2

.github/workflows/backport.yml

@@ -16,7 +16,7 @@ jobs:
     steps:
       - name: Generate GitHub App token
         id: generate-token
-        uses: actions/create-github-app-token@v1
+        uses: actions/create-github-app-token@v2
         with:
           app-id: ${{ vars.CI_APP_ID }}
           private-key: ${{ secrets.CI_APP_PRIVATE_KEY }}