extension: Bump wxt from 0.17.12 to 0.18.1 in /apps/extension

Bumps [wxt](https://github.com/wxt-dev/wxt) from 0.17.12 to 0.18.1.
- [Release notes](https://github.com/wxt-dev/wxt/releases)
- [Commits](wxt-dev/wxt@v0.17.12...v0.18.1)

---
updated-dependencies:
- dependency-name: wxt
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>