chore(deps): bump protobuf in /modules/examples/mlops-stepfunctions (#328)

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 4.25.4 to 4.25.8.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v4.25.4...v4.25.8)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 4.25.8
  dependency-type: indirect
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

modules/examples/mlops-stepfunctions/requirements.txt

@@ -142,7 +142,7 @@ pox==0.3.4
     # via pathos
 ppft==1.7.6.8
     # via pathos
-protobuf==4.25.4
+protobuf==4.25.8
     # via sagemaker
 psutil==6.0.0
     # via sagemaker