build(deps): bump protobuf from 3.20.2 to 7.34.0rc1 in /infra/cifuzz

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.20.2 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: direct:production
...

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

Author: dependabot[bot]

infra/cifuzz/requirements.txt

@@ -1,3 +1,3 @@
 clusterfuzz==2.5.9
 requests==2.28.0
-protobuf==3.20.2
+protobuf==7.34.0rc1