Disable auto-deployment for sign environment

Use deployment: false to access environment secrets without creating
spurious deployment entries. See actions/runner#2120.

Co-authored-by: Isaac

Author: pietern

.github/workflows/release-build.yml

@@ -12,7 +12,9 @@ on:
 
 jobs:
   cli:
-    environment: sign
+    environment:
+      name: sign
+      deployment: false
     runs-on:
       group: databricks-deco-testing-runner-group
       labels: ubuntu-latest-deco