ci: use GitHub App token for release-please

Replace GITHUB_TOKEN with a GitHub App token to allow
release-please to trigger downstream workflows.

Author: amondnet

.github/workflows/release-please.yml

@@ -17,10 +17,16 @@ jobs:
       eslint-config-released: ${{ steps.release.outputs['packages/eslint-config--release_created'] }}
       prettier-config-released: ${{ steps.release.outputs['packages/perttier-config--release_created'] }}
     steps:
+      - uses: actions/create-github-app-token@fee1f7d63c2ff003460e3d139729b119787bc349 # v2.2.2
+        id: app-token
+        with:
+          app-id: ${{ secrets.APP_ID }}
+          private-key: ${{ secrets.PRIVATE_KEY }}
+
       - uses: googleapis/release-please-action@16a9c90856f42705d54a6fda1823352bdc62cf38 # v4.4.0
         id: release
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ steps.app-token.outputs.token }}
           config-file: release-please-config.json
           manifest-file: .release-please-manifest.json