chore: release 2.22.1

[tswast]

Release-As: 2.22.1

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Fixes #<issue_number_goes_here> 🦕

[tswast]

Not actually the release PR (no changelog update). Just following https://github.com/googleapis/release-please#how-do-i-change-the-version-number

[plamut]

Let's see if this hollow PR indeed helps.

Edit: Yes, it did.