[pre-commit.ci] auto fixes from pre-commit.com hooks

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src/_pytest/tmpdir.py

@@ -161,6 +161,7 @@ def get_user() -> Optional[str]:
     try:
         # In some exotic environments, getpass may not be importable.
         import getpass
+
         return getpass.getuser()
     except (ImportError, KeyError):
         return None