Updating DiagnosticSource to version 5.0.0-rc.2.20475.5

[eddynaka]

Fixes #.

Changes

Please provide a brief description of the changes here.

For significant contributions please make sure you have completed the following items:

• CHANGELOG.md updated for non-trivial changes
• Design discussion issue #
• Changes in public API reviewed

[reyang]

[codecov]

Codecov Report

Merging #1346 into master will decrease coverage by 0.28%.
The diff coverage is 92.68%.

@@            Coverage Diff             @@
##           master    #1346      +/-   ##
==========================================
- Coverage   77.88%   77.60%   -0.29%     
==========================================
  Files         226      226              
  Lines        6386     6314      -72     
==========================================
- Hits         4974     4900      -74     
- Misses       1412     1414       +2     

Impacted Files	Coverage Δ
...tation.AspNetCore/Implementation/HttpInListener.cs	87.50% <ø> (-0.12%)	⬇️
...ent/Implementation/GrpcClientDiagnosticListener.cs	83.33% <ø> (-0.46%)	⬇️
...tp/Implementation/HttpHandlerDiagnosticListener.cs	78.82% <25.00%> (ø)
src/OpenTelemetry.Api/Trace/ActivityExtensions.cs	99.12% <100.00%> (+0.03%)	⬆️
src/OpenTelemetry.Api/Trace/SpanHelper.cs	100.00% <100.00%> (+1.38%)	⬆️
src/OpenTelemetry.Api/Trace/Status.cs	100.00% <100.00%> (ø)
...metryProtocol/Implementation/ActivityExtensions.cs	90.34% <100.00%> (ø)
...try.Instrumentation.GrpcNetClient/GrpcTagHelper.cs	100.00% <100.00%> (ø)
...ient/Implementation/SqlClientDiagnosticListener.cs	75.36% <100.00%> (ø)
...mentation/RedisProfilerEntryToActivityConverter.cs	94.59% <100.00%> (ø)
... and 5 more