build: Test registry dispatch workflow

Author: ishulgin

.github/workflows/test-registry-dispatch.yml

@@ -0,0 +1,32 @@
+name: Test Registry Dispatch
+
+# TEMPORARY
+on:
+  push:
+    branches: [ish/trigger-registry-update]
+
+permissions: {}
+
+jobs:
+  test-dispatch:
+    runs-on: ubuntu-latest
+    permissions: {}
+    steps:
+      - name: Generate token scoped to the registry repo
+        uses: actions/create-github-app-token@v3
+        id: registry-token
+        with:
+          app-id: ${{ secrets.REGISTRY_UPDATER_APP_ID }}
+          private-key: ${{ secrets.REGISTRY_UPDATER_APP_PRIVATE_KEY }}
+          owner: ${{ github.repository_owner }}
+          repositories: registry
+
+      - name: Dispatch registry version update
+        env:
+          GH_TOKEN: ${{ steps.registry-token.outputs.token }}
+        run: |
+          gh workflow run update-versions.yml \
+            --repo ${{ github.repository_owner }}/registry \
+            --ref main \
+            -f apply=false \
+            -f agents=codex-acp