Version Updates for protobuf

[ckstettler00]

• Updates to versions
  • 1.43.2 -3.19.1
• Added a io.grpc bom to ensure consistent dependency versions for grpc.
• Added some logging that helped to debug issues.
• Refactored sampler to reflect changes in how responses were handled.

[anhldbk]

@thoainguyen PTAL

[thoainguyen]

LGTM @ckstettler00