build(deps): bump third_party/googletest from b3a9ba2 to 530d5c8

Bumps [third_party/googletest](https://github.com/google/googletest) from `b3a9ba2` to `530d5c8`.
- [Release notes](https://github.com/google/googletest/releases)
- [Commits](google/googletest@b3a9ba2...530d5c8)

---
updated-dependencies:
- dependency-name: third_party/googletest
  dependency-type: direct:production
...

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