Bump immer from 9.0.15 to 9.0.18

Bumps [immer](https://github.com/immerjs/immer) from 9.0.15 to 9.0.18.
- [Release notes](https://github.com/immerjs/immer/releases)
- [Commits](immerjs/immer@v9.0.15...v9.0.18)

---
updated-dependencies:
- dependency-name: immer
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]