ci: add/update workflow for autosquash on PRs

Author: wetransformer

.github/workflows/tf-autosquash.yml

@@ -23,7 +23,7 @@ jobs:
         env:
           WE_HELPER_GITHUB_PRIVATE_KEY: ${{ secrets.WE_HELPER_GITHUB_PRIVATE_KEY }}
         if: env.WE_HELPER_GITHUB_PRIVATE_KEY # only if we have the required secret
-        uses: actions/create-github-app-token@3ff1caaa28b64c9cc276ce0a02e2ff584f3900c5 # v2.0.2
+        uses: actions/create-github-app-token@df432ceedc7162793a195dd1713ff69aefc7379e # v2.0.6
         id: app-token
         with:
           app-id: ${{ secrets.WE_HELPER_GITHUB_APP_ID }}