Update deployment namespace in CI

Author: jb3

.github/workflows/forms-backend.yml

@@ -114,6 +114,7 @@ jobs:
       - name: Deploy to Kubernetes
         uses: Azure/k8s-deploy@v1
         with:
+          namespace: forms
           manifests: |
             deployment.yaml
           images: 'ghcr.io/python-discord/forms-backend:${{ steps.sha_tag.outputs.tag }}'