chore(deps): bump xunit from 2.8.1 to 2.9.2

[dependabot[bot]]

Bumps xunit from 2.8.1 to 2.9.2.

Commits

• 82543a6 v2.9.2
• 0f8f156 #3031: Changes to TheoryData break tests with arrays of objects
• 502f6d1 Bump up to v2.9.2-pre
• bb7c3e4 v2.9.1
• 5d70d25 #3028: Support IGrouping<TKey,TValue> in Assert.Equivalent (v2)
• ed6e05b Add support for IGrouping<,> in ArgumentFormatter, assuming it's safe to re-e...
• d97c7f8 Restore TestInvoker<T>.GetTaskFromResult (forwards to AsyncUtility.TryConvert...
• 416ed81 #3021: Add overload of Assert.Equal to resolve compiler ambiguity
• 6b86235 Add Assert.Equivalent support for evaluating Lazy<T>
• aadff05 Updated build table in README
• Additional commits viewable in compare view

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