Bump external/benchmark from 23d8c1e to 24e0bd8

Bumps [external/benchmark](https://github.com/google/benchmark) from `23d8c1e` to `24e0bd8`.
- [Release notes](https://github.com/google/benchmark/releases)
- [Commits](google/benchmark@23d8c1e...24e0bd8)

---
updated-dependencies:
- dependency-name: external/benchmark
  dependency-type: direct:production
...

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