Add renovate-app-token workflow and repository_dispatch trigger to release

- Added  for Mend Renovate GitHub App token generation
- Added  trigger to release workflow for automated upstream releases

Co-Authored-By: Paperclip <noreply@paperclip.ing>

.github/workflows/release.yaml

@@ -7,6 +7,8 @@ on:
         description: 'Release version (e.g. 1.0.0)'
         required: true
         type: string
+  repository_dispatch:
+    types: [release]
 
 permissions:
   contents: write
@@ -19,5 +21,5 @@ jobs:
       RELEASE_APP_ID: ${{ secrets.RELEASE_APP_ID }}
       RELEASE_APP_PRIVATE_KEY: ${{ secrets.RELEASE_APP_PRIVATE_KEY }}
     with:
-      version: ${{ inputs.version }}
+      version: ${{ inputs.version || github.event.client_payload.version }}
       upstream-repo: fenio/tns-csi