[Instrumentation.Owin] Update to semantic convention v1.27.0

[ysolomchenko]

Fixes #1949

Changes

Add documentation for OTEL_DOTNET_EXPERIMENTAL_OWIN_DISABLE_URL_QUERY_REDACTION

Merge requirement checklist

• CONTRIBUTING guidelines followed (license requirements, nullable enabled, static analysis, etc.)
• Unit tests added/updated
• Appropriate CHANGELOG.md files updated for non-trivial changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

Attention: Patch coverage is 91.66667% with 1 line in your changes missing coverage. Please review.

Project coverage is 85.97%. Comparing base (71655ce) to head (94e423d).
Report is 430 commits behind head on main.

Files with missing lines	Patch %	Lines
...ation.Owin/Implementation/DiagnosticsMiddleware.cs	91.66%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2028       +/-   ##
===========================================
+ Coverage   73.91%   85.97%   +12.05%     
===========================================
  Files         267        8      -259     
  Lines        9615      164     -9451     
===========================================
- Hits         7107      141     -6966     
+ Misses       2508       23     -2485     

Flag	Coverage Δ
unittests-Instrumentation.Owin	85.97% <91.66%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
...ation.Owin/Implementation/DiagnosticsMiddleware.cs	91.00% <91.66%> (-0.87%)	⬇️

... and 268 files with indirect coverage changes

[Kielek]

@CodeBlanch, merging.
I do not see anything problematic here. If you find something like this post-merge, please let me know.