chore(deps): bump protobuf in /src/shoppingassistantservice (#2992)

Bumps [protobuf](https://github.com/protocolbuffers/protobuf) from 5.29.4 to 5.29.5.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v5.29.4...v5.29.5)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 5.29.5
  dependency-type: indirect
...

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

Author: dependabot[bot]

src/shoppingassistantservice/requirements.txt

@@ -162,7 +162,7 @@ proto-plus==1.26.1
     #   google-ai-generativelanguage
     #   google-api-core
     #   google-cloud-secret-manager
-protobuf==5.29.4
+protobuf==5.29.5
     # via
     #   google-ai-generativelanguage
     #   google-api-core