add py311 to test matrix

[philvarner]

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Related Issue(s):

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Description:

add python 3.11 to the test matrix

PR checklist:

• [ ] Code is formatted (run scripts/format).
• [ ] Code lints properly (run scripts/lint).
• [ ] Tests pass (run scripts/test).
• [ ] Documentation has been updated to reflect changes, if applicable.
• [ ] Changes are added to the CHANGELOG.