Replace `std::sync::Mutex` with `parking_lot::Mutex` in `languages/src/python.rs` (#29889)

This appears to be the only place `std::sync::Mutex` is used, Zed always
prefers `parking_lot`.

Release Notes:

- N/A
86484233c0Michael Sloan committed on 5/4/2025, 9:12:21 PM· committed by GitHubparentf4e9ea3
3 files changedLine totals unavailable