test(deploy): run deployment in alternate namespace to isolate apply conflicts

Author: Genesis Alvarez

.github/workflows/production.yaml

@@ -186,4 +186,4 @@ jobs:
       - name: Deploy
         uses: docker://gcr.io/cloud-builders/gke-deploy
         with:
-          args: run --filename=deployment.yaml --app=${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG }} --version=${{ env.GITHUB_REF_SLUG }} --timeout 1800s
+          args: run --filename=deployment.yaml --app=${{ env.GITHUB_REPOSITORY_NAME_PART_SLUG }} --version=${{ env.GITHUB_REF_SLUG }} --namespace=test-ns --timeout 1800s