fix(clippy): warning on the size of the tonic::Status type

[joshuachp]

Convert the status to a string an only return the code.

[codecov]

Codecov Report

Attention: Patch coverage is 57.14286% with 3 lines in your changes missing coverage. Please review.

Project coverage is 68.2%. Comparing base (7a03429) to head (0f6296d).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
src/transport/grpc/mod.rs	57.1%	3 Missing ⚠️

Additional details and impacted files

Files with missing lines	Coverage Δ
src/transport/grpc/mod.rs	44.2% <57.1%> (-0.7%)	⬇️

... and 1 file with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.