Python Requirements Update

[edx-requirements-bot]

Python requirements update. Please review the changelogs for the upgraded packages.

Deleted obsolete pull_requests: https://github.com/openedx/edx-lint/pull/322

[edx-requirements-bot]

List of packages in the PR without any issue.

• astroid changes from 2.14.2 to 2.15.0
  • exceptiongroup changes from 1.1.0 to 1.1.1
  • pip-tools changes from 6.12.2 to 6.12.3
  • platformdirs changes from 3.0.0 to 3.1.1
  • pylint changes from 2.16.2 to 2.17.0
  • pytest changes from 7.2.1 to 7.2.2
  • virtualenv changes from 20.19.0 to 20.21.0