Update pywinpty requirement from ~=2.0.7 to ~=2.0.8

Updates the requirements on [pywinpty](https://github.com/spyder-ide/pywinpty) to permit the latest version.
- [Release notes](https://github.com/spyder-ide/pywinpty/releases)
- [Changelog](https://github.com/andfoy/pywinpty/blob/main/CHANGELOG.md)
- [Commits](andfoy/pywinpty@v2.0.7...v2.0.8)

---
updated-dependencies:
- dependency-name: pywinpty
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -119,7 +119,7 @@ pytz~=2022.2
 PyVISA~=1.12.0
 PyVISA-sim~=0.5.1
 pywin32==304; sys_platform == 'win32'
-pywinpty~=2.0.7; sys_platform == 'win32'
+pywinpty~=2.0.8; sys_platform == 'win32'
 PyYAML~=6.0
 pyzmq~=24.0.0
 requests~=2.28.1