Prevent null from breaking the deploy script

no issue

Author: sam-lord

.github/workflows/deploy.yml

@@ -76,7 +76,7 @@ jobs:
     - name: Extract Deployment Name and Namespace
       run: |
         deployment_name=$(yq e 'select(.kind == "Deployment") | .metadata.name' /tmp/built-manifest.yaml)
-        namespace=$(yq e 'select(.kind == "Deployment") | .metadata.namespace' /tmp/built-manifest.yaml)
+        namespace=$(yq e 'select(.kind == "Deployment") | .metadata.namespace' /tmp/built-manifest.yaml | sed 's/^null$/default/')
         namespace=${namespace:-default}
         echo "Deployment Name: $deployment_name"
         echo "Namespace: $namespace"