Fix types usage

stack_orchestrator/deploy/webapp/deploy_webapp.py

@@ -14,6 +14,7 @@
 # along with this program.  If not, see <http:#www.gnu.org/licenses/>.
 
 import shutil
+from typing import List
 import click
 import os
 import yaml
@@ -39,7 +40,7 @@ def _fixup_container_tag(deployment_dir: str, image: str):
         wfile.write(contents)
 
 
-def _fixup_url_spec(spec_file_name: str, urls: list[str]):
+def _fixup_url_spec(spec_file_name: str, urls: List[str]):
     spec_file_path = Path(spec_file_name)
 
     # Load existing spec

stack_orchestrator/deploy/webapp/deploy_webapp_from_registry.py

@@ -20,6 +20,7 @@ import shutil
 import sys
 import tempfile
 import time
+from typing import List
 import uuid
 import yaml
 
@@ -184,7 +185,7 @@ def process_app_deployment_request( # noqa
                     % (app_deployment_lrn, existing_deployment_dir)
                 )
 
-            previous_app_deployment_lrns: list[str] = deployment_record.names
+            previous_app_deployment_lrns: List[str] = deployment_record.names
             previous_fqdns = [lrn.removeprefix(f"{deployment_record_namespace}/") for lrn in previous_app_deployment_lrns]
             fqdns_to_release = list(set(previous_fqdns) - set(fqdns))