blast repo changes: auto-publish (dart-archive/appengine#168)

* blast_repo fixes

auto-publish

* update changelog version

Author: devoncarew

pkgs/appengine/.github/workflows/publish.yaml

@@ -0,0 +1,17 @@
+# A CI configuration to auto-publish pub packages.
+
+name: Publish
+
+on:
+  pull_request:
+    branches: [ master ]
+  push:
+    tags: [ 'v[0-9]+.[0-9]+.[0-9]+' ]
+
+jobs:
+  publish:
+    if: ${{ github.repository_owner == 'dart-lang' }}
+    uses: dart-lang/ecosystem/.github/workflows/publish.yaml@main
+    permissions:
+      id-token: write # Required for authentication using OIDC
+      pull-requests: write # Required for writing the pull request note

pkgs/appengine/CHANGELOG.md

@@ -1,4 +1,4 @@
-## 0.13.6-wip
+## 0.13.6
 
 * Require Dart 2.19.
 * Setup `dbService` to do retries for failed requests.