use otelbot short time token for pushing nightly tags

Author: mowies

.github/workflows/nightly-release.yaml

@@ -17,14 +17,17 @@ jobs:
     name: Nightly Release
     runs-on: ubuntu-latest
 
-    permissions:
-      contents: write
-
     steps:
+      - uses: actions/create-github-app-token@df432ceedc7162793a195dd1713ff69aefc7379e # v2.0.6
+        id: otelbot-token
+        with:
+          app-id: ${{ vars.OTELBOT_COLLECTOR_RELEASES_APP_ID }}
+          private-key: ${{ secrets.OTELBOT_COLLECTOR_RELEASES_PRIVATE_KEY }}
+
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
         with:
           fetch-depth: 0
-          token: ${{ secrets.GH_PAT }}
+          token: ${{ steps.otelbot-token.outputs.token }}
 
       - name: 'Push new tag'
         run: |