Ashesh Vidyut d312b25f71 [Python] Upgrade black (#39774) ...

### Description

* Upgrade Black to use the latest version. [Pypi-Black (25.1.0)](https://pypi.org/project/black/)
* Run `black` to reformat files to make the sanity tests pass in CI

**Note - all the file changes are by `black` command** except for the black version bump which is

https://github.com/grpc/grpc/pull/39774/files#diff-0512cc461bc04ba96303b81398cc5926bd16e120cbe48decd0c44ea0a8fb76e6R36

### Testing
CI

Closes #39774

PiperOrigin-RevId: 769640677

2025-06-10 08:24:10 -07:00

..

bloat

[bloat] Add a compile time option to remove ztraces from the build (#39257)

2025-04-15 15:31:14 -07:00

ios_bin

[Python] Migrate from yapf to black (#33138)

2023-06-09 15:08:55 -07:00

memory

[memory-diff] Increase threshold for call memory increased/decreased (#38674)

2025-02-03 16:33:49 -08:00

qps

[Python] Upgrade black (#39774)

2025-06-10 08:24:10 -07:00