Bumps [web-ext](https://github.com/mozilla/web-ext) from 3.0.0 to 3.1.1.
- [Release notes](https://github.com/mozilla/web-ext/releases)
- [Commits](mozilla/web-ext@3.0.0...3.1.1)

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