test: ignore CIText warnings in test output

The updated SQLAlchemy library now emits 2,000+ warnings for CIText().

I've opened an issue on the responsible repo.

Refs: mahmoudimus/sqlalchemy-citext#25

Signed-off-by: Mike Fiedler <miketheman@gmail.com>

pyproject.toml

@@ -17,4 +17,5 @@ markers = [
 filterwarnings = [
     'ignore::warehouse.admin.services.InsecureStorageWarning',
     'ignore::warehouse.packaging.services.InsecureStorageWarning',
+    'ignore:UserDefinedType CIText.*:sqlalchemy.exc.SAWarning'  # See https://github.com/mahmoudimus/sqlalchemy-citext/issues/25
 ]