Bump web-ext from 7.2.0 to 7.3.0 (#1455)

Bumps [web-ext](https://github.com/mozilla/web-ext) from 7.2.0 to 7.3.0.
- [Release notes](https://github.com/mozilla/web-ext/releases)
- [Commits](mozilla/web-ext@7.2.0...7.3.0)

---
updated-dependencies:
- dependency-name: web-ext
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>