Update protobuf requirement from <=3.20.3,>=3.1.0 to >=3.1.0,<=4.23.4

Updates the requirements on [protobuf](https://github.com/protocolbuffers/protobuf) to permit the latest version.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.1.0...v4.23.4)

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

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

requirements.txt

@@ -17,7 +17,7 @@ openpyxl
 # paddlepaddle-gpu >= 2.2.0
 paddleslim >= 2.2.1, < 2.3.5
 pandas
-protobuf >= 3.1.0, <= 3.20.3
+protobuf >= 3.1.0, <= 4.23.4
 pycocotools
 # pydensecrf
 scikit-learn