py-yapf: updated to 0.40.1

0.40.1
Fixed
- Corrected bad distribution v0.40.0 package.

0.40.0
Added
- Support for Python 3.11
- Add the `--print-modified` flag to print out file names of modified files when
  running in in-place mode.
Changes
- Replace the outdated and no-longer-supported lib2to3 with a fork of blib2to3,
  Black's version of lib2to3.
Removed
- Support for Python versions < 3.7 are no longer supported.

(adam)