build(deps): bump protobuf from 3.20.3 to 7.34.0rc1 in /fuzzer_runner

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.20.3 to 7.34.0rc1.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 7.34.0rc1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]