chore: Add python 3.11 support

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 94.21%. Comparing base (3831e24) to head (a7d8269).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #297 +/- ## ========================================== + Coverage 94.14% 94.21% +0.06% ========================================== Files 29 29 Lines 2868 2868 Branches 624 641 +17 ========================================== + Hits 2700 2702 +2 + Misses 142 141 -1 + Partials 26 25 -1 ``` | [Flag](https://app.codecov.io/gh/openedx/opaque-keys/pull/297/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openedx) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/openedx/opaque-keys/pull/297/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openedx) | `94.21% <100.00%> (+0.06%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=openedx#carryforward-flags-in-the-pull-request-comment) to find out more.

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