pip: bump pywin32 from 306 to 308

Bumps [pywin32](https://github.com/mhammond/pywin32) from 306 to 308.
- [Release notes](https://github.com/mhammond/pywin32/releases)
- [Changelog](https://github.com/mhammond/pywin32/blob/main/CHANGES.txt)
- [Commits](https://github.com/mhammond/pywin32/commits)

---
updated-dependencies:
- dependency-name: pywin32
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

pip-requirements.txt

@@ -17,4 +17,4 @@ edk2-pytool-extensions==0.27.12
 xmlschema==3.4.2
 regex==2024.9.11
 pygount==1.8.0
-pywin32==306; sys_platform == 'win32'
+pywin32==308; sys_platform == 'win32'