adds workflow to trigger creation of PR in buildpacks/registry-index …

…on release of buildpacks/github-actions

Signed-off-by: Mritunjay Sharma <[email protected]>

.github/workflows/action-registry-index-update-release.yml

@@ -0,0 +1,14 @@
+name: Creating the PR to update the version of buildpacks/github-actions on buildpacks/registry-index
+on:
+  release:
+    types: [published]
+jobs:
+  myEvent:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Repository Dispatch
+        uses: peter-evans/repository-dispatch@v1
+        with:
+          token: ${{ secrets.DISTRIBUTION_GITHUB_TOKEN }}
+          repository: buildpacks/registry-index
+          event-type: release-event