Bump the opentracing-proto submodule to fix go bindings

[gordallott]

Describe the bug
The go bindings have been broken for a while because of upstream changes in open-telemetry/opentracing - they recently merged a PR that will fix golang bindings built from their .proto files

To Reproduce
Steps to reproduce the behavior:

1. make proto
2. oh no the golang proto files don't build

Expected behavior
The proto files to build

Screenshots
nope

Version (please complete the following information):

• OS: linux
• Jaeger version:
• Deployment:

What troubleshooting steps did you try?

Additional context
the cause was the upstream proto files depending on generated go that didn't exist anywhere publicly, they now import the correct repository

The opentracing-proto submodule needs to be bumped to (at least) open-telemetry/opentelemetry-proto@0e254b5

I avoided just making a PR to do this because I'm unsure of any other changes that might affect this repository

[yurishkuro]

Make proto works for me. You need to init/update submodule in your local repo. If you still can't build, please post the errors.

[gordallott]

make proto works, it builds the files - the problem is it generates incorrect go code as detailed above. specifically the imports are wrong because of a mistake on part of open-telemetry/opentelemetry-proto

[yurishkuro]

cc @albertteoh

I see that in the main Jaeger repo we have ./otel_proto_patch.sed that rewrites some of the parts in the file