Make deploy dependent on tests passing

.github/workflows/pipeline.yml

@@ -6,6 +6,8 @@ on:
     - main
   pull_request:
 
+concurrency: 'sandbox'
+
 defaults:
   run:
     shell: bash
@@ -15,7 +17,6 @@ jobs:
   test:
     name: Test
     runs-on: ubuntu-latest
-    concurrency: 'sandbox'
 
     services:
       postgres:
@@ -75,7 +76,7 @@ jobs:
 
     runs-on: ubuntu-latest
     environment: 'sandbox'
-    concurrency: 'sandbox'
+    needs: test
 
     steps:
     - name: Checkout code