style: fix ruff formatting in test_install.py

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: jschfflr

tests/test_install.py

@@ -51,8 +51,10 @@ def test_no_flag_exits_with_validation_error(self) -> None:
             install(skills=False)
 
     def test_skills_flag_prints_success(self, tmp_path: Path) -> None:
-        with patch("qodev_gitlab_cli.commands.install.console") as mock_console, \
-             patch("qodev_gitlab_cli.commands.install.Path") as mock_path:
+        with (
+            patch("qodev_gitlab_cli.commands.install.console") as mock_console,
+            patch("qodev_gitlab_cli.commands.install.Path") as mock_path,
+        ):
             mock_path.cwd.return_value = tmp_path
             install(skills=True)