fix(astrolabe): add contents:write permission to appstore workflow

The workflow was failing to create GitHub releases with 'Not Found' error
because it lacked the required permissions. Added contents:write permission
to allow creating releases and uploading artifacts.

.github/workflows/appstore-build-publish.yml

@@ -12,6 +12,8 @@ env:
 jobs:
   build-and-publish:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
 
     steps:
       - name: Checkout code