Python Requirements Update

[edx-requirements-bot]

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

[edx-requirements-bot]

Packages upgraded.

• pytz changes from 2022.6 to 2022.7.
• tox changes from 3.27.1 to 3.28.0.
• isort changes from 5.10.1 to 5.11.3.
• pip-tools changes from 6.11.0 to 6.12.1.
• pylint changes from 2.15.8 to 2.15.9.
• importlib-metadata changes from 5.1.0 to 5.2.0.
• keyring changes from 23.11.0 to 23.13.1.

[edx-requirements-bot]

The PR needs manual review before merge.

• coverage changes from 6.5.0 to 7.0.0.
• coverage[toml] changes from 6.5.0 to 7.0.0.
• importlib-resources changes from ` to5.10.1`.

[edx-requirements-bot]

Closing obsolete PR.