Build(deps): bump the pip-deps group across 1 directory with 4 updates

Bumps the pip-deps group with 4 updates in the /requirements directory: [protobuf](https://github.com/protocolbuffers/protobuf), [grpcio](https://github.com/grpc/grpc), [grpcio-tools](https://github.com/grpc/grpc) and [pytest](https://github.com/pytest-dev/pytest).


Updates `protobuf` from 5.26.1 to 6.31.1
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v5.26.1...v6.31.1)

Updates `grpcio` from 1.70.0 to 1.72.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.70.0...v1.72.1)

Updates `grpcio-tools` from 1.70.0 to 1.72.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](grpc/grpc@v1.70.0...v1.72.1)

Updates `pytest` from 8.3.5 to 8.4.0
- [Release notes](https://github.com/pytest-dev/pytest/releases)
- [Changelog](https://github.com/pytest-dev/pytest/blob/main/CHANGELOG.rst)
- [Commits](pytest-dev/pytest@8.3.5...8.4.0)

---
updated-dependencies:
- dependency-name: protobuf
  dependency-version: 6.31.1
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: pip-deps
- dependency-name: grpcio
  dependency-version: 1.72.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-deps
- dependency-name: grpcio-tools
  dependency-version: 1.72.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-deps
- dependency-name: pytest
  dependency-version: 8.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: pip-deps
...

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

Author: dependabot[bot]

requirements/requirements_build.txt

@@ -6,10 +6,10 @@ Click>=7.0
 Flask==3.0.3
 numpy>=1.21.5
 requests>=2.22.0
-protobuf==5.26.1
-grpcio==1.70.0
-grpcio-tools==1.70.0
-pytest==8.3.5
+protobuf==6.31.1
+grpcio==1.72.1
+grpcio-tools==1.72.1
+pytest==8.4.0
 pytest-cov==5.0.0
 pytest-grpc==0.8.0
 conan>=1.48.0,<2