Bump @devvit/public-api from 0.10.21 to 0.11.5

Bumps @devvit/public-api from 0.10.21 to 0.11.5.

---
updated-dependencies:
- dependency-name: "@devvit/public-api"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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