[release/7.0] (deps): Bump src/submodules/googletest (#52508)

Bumps [src/submodules/googletest](https://github.com/google/googletest) from `b10fad3` to `76bb2af`.
- [Release notes](https://github.com/google/googletest/releases)
- [Commits](google/googletest@b10fad3...76bb2af)

---
updated-dependencies:
- dependency-name: src/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>

Author: dependabot[bot]