Bump submodules/googletest from 3940de9 to d89aac5

Bumps [submodules/googletest](https://github.com/google/googletest) from `3940de9` to `d89aac5`.
- [Release notes](https://github.com/google/googletest/releases)
- [Commits](google/googletest@3940de9...d89aac5)

---
updated-dependencies:
- dependency-name: submodules/googletest
  dependency-version: d89aac5f0dd4021198d903d39de16f896726de21
  dependency-type: direct:production
...

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Author: dependabot[bot]