Bump trio from 0.21.0 to 0.22.0

[dependabot[bot]]

Bumps trio from 0.21.0 to 0.22.0.

Commits

• 87ea870 Bump version to 0.22.0
• b3a7c58 Merge pull request #2412 from python-trio/dependabot/pip/prompt-toolkit-3.0.31
• f25da42 Merge pull request #2425 from python-trio/dependabot/pip/immutables-0.19
• e8016ed Bump prompt-toolkit from 3.0.30 to 3.0.31
• 45e9088 Bump immutables from 0.18 to 0.19
• f7a365b Merge pull request #2213 from python-trio/exceptiongroup
• 7a6d4b5 Merge pull request #2430 from python-trio/dependabot/pip/mypy-0.981
• 23d12bd Remove now unused type: ignore
• 045f78b Bump mypy from 0.971 to 0.981
• 80889b2 Removed unused parameter
• Additional commits viewable in compare view

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