chore(deps)(deps-dev): bump web-ext from 8.5.0 to 9.0.0

Bumps [web-ext](https://github.com/mozilla/web-ext) from 8.5.0 to 9.0.0.
- [Release notes](https://github.com/mozilla/web-ext/releases)
- [Commits](mozilla/web-ext@8.5.0...9.0.0)

---
updated-dependencies:
- dependency-name: web-ext
  dependency-version: 9.0.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -55,7 +55,7 @@
     "prettier": "^3.6.2",
     "run-script-os": "^1.1.3",
     "sinon": "^21.0.0",
-    "web-ext": "^8.5.0",
+    "web-ext": "^9.0.0",
     "webextension-polyfill": "^0.12.0",
     "webpack": "^5.98.0",
     "webpack-cli": "^6.0.1"