build(deps): update protobuf requirement in /requirements

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@v2.4.1...v4.25.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements/base.txt

@@ -10,6 +10,6 @@ pyDeprecate >0.2.0
 pandas >1.1.0, <=2.0.3
 jsonargparse[signatures] >=4.22.0, <4.23.0
 click >=7.1.2, <=8.1.6
-protobuf <=3.20.1
+protobuf <=4.25.0
 fsspec[http] >=2022.5.0,<=2023.6.0
 lightning-utilities >=0.4.1