Bump @preact/signals from 1.2.1 to 1.2.2

Bumps [@preact/signals](https://github.com/preactjs/signals/tree/HEAD/packages/preact) from 1.2.1 to 1.2.2.
- [Release notes](https://github.com/preactjs/signals/releases)
- [Changelog](https://github.com/preactjs/signals/blob/main/packages/preact/CHANGELOG.md)
- [Commits](https://github.com/preactjs/signals/commits/@preact/signals-core@1.2.2/packages/preact)

---
updated-dependencies:
- dependency-name: "@preact/signals"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>