Fix dependency on gcloud (dart-archive/appengine#144)

Author: jonasfj

pkgs/appengine/CHANGELOG.md

@@ -1,4 +1,9 @@
+## 0.13.1
+ * Fix dependency on `package:gcloud` to version `0.8.0`.
+
 ## 0.13.0
+**WARNING**: Version `0.13.0` is broken, use `0.13.1`.
+
  * Migrated to _null-safety_ and `package:gcloud` version `0.8.0`.
 
 ## 0.12.1

pkgs/appengine/pubspec.yaml

@@ -1,5 +1,5 @@
 name: appengine
-version: 0.13.0
+version: 0.13.1
 description: >-
   Support for using Dart as a custom runtime on
   Google App Engine Flexible Environment
@@ -10,7 +10,7 @@ environment:
 
 dependencies:
   fixnum: ^1.0.0
-  gcloud: ^0.7.0
+  gcloud: ^0.8.0
   googleapis_auth: ^1.1.0
   grpc: ^3.0.0
   http: ^0.13.3