chore(ci): extract trigger-website-deploy into reusable workflow (#2267)

## Summary
- Extract the `trigger-website-deploy` job into a separate reusable
workflow
- Can be called from `release-please.yml` (existing behavior unchanged)
- Can now be triggered manually via workflow_dispatch

Author: joeyorlando

.github/workflows/release-please.yml

@@ -106,14 +106,10 @@ jobs:
       GCP_WORKLOAD_IDENTITY_PROVIDER_IDENTIFIER: ${{ secrets.DEVELOPMENT_OAUTH_PROXY_RELEASER_GCP_WORKLOAD_IDENTITY_PROVIDER_IDENTIFIER }}
 
   trigger-website-deploy:
-    name: Trigger Website Vercel Deploy
-    runs-on: ubuntu-latest
+    name: Trigger Website Deploy
+    if: needs.release-please.outputs.platform_release_created
+    uses: ./.github/workflows/trigger-website-deploy.yml
     needs:
       - release-please
-    if: needs.release-please.outputs.platform_release_created
-    steps:
-      - name: Trigger Vercel Deploy Hook
-        env:
-          VERCEL_DEPLOY_HOOK_URL: ${{ secrets.WEBSITE_VERCEL_DEPLOY_HOOK_URL }}
-        run: |
-          curl -X POST "$VERCEL_DEPLOY_HOOK_URL"
+    secrets:
+      WEBSITE_VERCEL_DEPLOY_HOOK_URL: ${{ secrets.WEBSITE_VERCEL_DEPLOY_HOOK_URL }}

.github/workflows/trigger-website-deploy.yml

@@ -0,0 +1,22 @@
+name: Trigger Website Deploy
+
+on:
+  workflow_call:
+    secrets:
+      WEBSITE_VERCEL_DEPLOY_HOOK_URL:
+        required: true
+        description: Vercel deploy hook URL for the website
+  workflow_dispatch:
+
+permissions: {}
+
+jobs:
+  trigger-website-deploy:
+    name: Trigger Website Vercel Deploy
+    runs-on: ubuntu-latest
+    steps:
+      - name: Trigger Vercel Deploy Hook
+        env:
+          VERCEL_DEPLOY_HOOK_URL: ${{ secrets.WEBSITE_VERCEL_DEPLOY_HOOK_URL }}
+        run: |
+          curl -X POST "$VERCEL_DEPLOY_HOOK_URL"