Bump submodules/googletest from 5376968 to 4219e72 (microsoft#2859)

Bumps [submodules/googletest](https://github.com/google/googletest) from `5376968` to `4219e72`.
- [Release notes](https://github.com/google/googletest/releases)
- [Commits](google/googletest@5376968...4219e72)

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

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

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