Bump protobuf from 3.11.2 to 3.18.3

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 3.11.2 to 3.18.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.11.2...v3.18.3)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements.txt

@@ -157,7 +157,7 @@ prettytable==0.7.2
 prometheus-client==0.7.1
 promise==2.3
 prompt-toolkit==2.0.10
-protobuf==3.11.2
+protobuf==3.18.3
 psutil==5.6.7
 py==1.8.1
 pyarrow==0.15.1