build(deps): bump third_party/abseil-cpp from 3735766 to cc70e83 (#…

…2500)

Bumps [third_party/abseil-cpp](https://github.com/abseil/abseil-cpp) from `3735766` to `cc70e83`.
- [Release notes](https://github.com/abseil/abseil-cpp/releases)
- [Commits](abseil/abseil-cpp@3735766...cc70e83)

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

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