build(deps-dev): bump @types/google.maps from 3.47.3 to 3.47.4 (#530)

Bumps [@types/google.maps](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/google.maps) from 3.47.3 to 3.47.4.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/google.maps)

---
updated-dependencies:
- dependency-name: "@types/google.maps"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]