Bump web-ext from 7.3.1 to 7.4.0 (#594)

Bumps [web-ext](https://github.com/mozilla/web-ext) from 7.3.1 to 7.4.0.
- [Release notes](https://github.com/mozilla/web-ext/releases)
- [Commits](https://github.com/mozilla/web-ext/compare/7.3.1...7.4.0)

---
updated-dependencies:
- dependency-name: web-ext
  dependency-type: direct:development
  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>

package.json

@@ -19,7 +19,7 @@
   },
   "devDependencies": {
     "eslint": "^8.28.0",
-    "web-ext": "^7.3.1",
+    "web-ext": "^7.4.0",
     "markdown": "^0.5.0"
   },
   "version": "1.2.0"