chore(deps-dev): bump @googlemaps/jest-mocks from 2.19.0 to 2.21.4

Bumps [@googlemaps/jest-mocks](https://github.com/googlemaps/js-jest-mocks) from 2.19.0 to 2.21.4.
- [Release notes](https://github.com/googlemaps/js-jest-mocks/releases)
- [Changelog](https://github.com/googlemaps/js-jest-mocks/blob/main/CHANGELOG.md)
- [Commits](googlemaps/js-jest-mocks@v2.19.0...v2.21.4)

---
updated-dependencies:
- dependency-name: "@googlemaps/jest-mocks"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

package.json

@@ -35,7 +35,7 @@
   "devDependencies": {
     "@babel/preset-env": "^7.23.6",
     "@babel/runtime-corejs3": "^7.23.5",
-    "@googlemaps/jest-mocks": "^2.19.0",
+    "@googlemaps/jest-mocks": "^2.21.4",
     "@rollup/plugin-babel": "^6.0.4",
     "@rollup/plugin-commonjs": "^25.0.7",
     "@rollup/plugin-html": "^1.0.3",