chore(deps): update actions/create-github-app-token action to v2 (argoproj#3239)

Author: argoproj-renovate[bot]

.github/workflows/renovate.yaml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Get token
-        uses: actions/create-github-app-token@d72941d797fd3113feb6b93fd0dec494b13a2547 # v1.12.0
+        uses: actions/create-github-app-token@3ff1caaa28b64c9cc276ce0a02e2ff584f3900c5 # v2.0.2
         id: get_token
         with:
           app-id: ${{ vars.RENOVATE_APP_ID }}