Upgrade protobuf

[cwlacewe]

Is your feature request related to a problem? Please describe.
When integrating VDMS into other frameworks, many times there's a mismatch with protobuf versions and require us to pin protobuf to version 4.24.2. Sometimes this requires us to search for versions of other packages that are compatible with our specific version (i.e. opentelemetry, grpcio-tools, etc.)

Describe the solution you'd like
Upgrade VDMS to support protobuf versions >4 instead of pinned to an exact version.

Additional context

• OPEA automatically installed version > 5
• LangChain required pinning also

[cwlacewe]

May postpone after #283 is complete to weigh our options as GRPC typically works with specific protobuf versions.