add missing stub

enterprise/dev_config/python/.pre-commit-config.yaml

@@ -50,6 +50,7 @@ repos:
           - ./
           - stripe==11.5.0
           - pygithub==2.6.1
+          - sqlalchemy>=2.0
         # Use -p (package) to avoid dual module name conflict when using MYPYPATH
         # MYPYPATH=enterprise allows resolving bare imports like "from integrations.xxx"
         # Note: tests package excluded to avoid conflict with core openhands tests