Bump @types/webextension-polyfill from 0.10.7 to 0.12.1

Bumps [@types/webextension-polyfill](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/webextension-polyfill) from 0.10.7 to 0.12.1.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/webextension-polyfill)

---
updated-dependencies:
- dependency-name: "@types/webextension-polyfill"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -38,7 +38,7 @@
         "@types/react": "18.3.3",
         "@types/react-dom": "18.3.0",
         "@types/validator": "^13.12.0",
-        "@types/webextension-polyfill": "^0.10.7",
+        "@types/webextension-polyfill": "^0.12.1",
         "@typescript-eslint/eslint-plugin": "^6.21.0",
         "@typescript-eslint/parser": "^6.21.0",
         "autoprefixer": "^10.4.15",