[SqlClient] Instrumentation reports telemetry schema URL v1.33.0

[Kielek]

Follow up to open-telemetry/opentelemetry-dotnet#6164

I have a plan to make similar PRs for AspNet, AspNetCore, and Http as there are stable and have verified semantic convention.

Changes

[SqlClient] Instrumentation reports telemetry schema URL v1.33.0

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

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.74%. Comparing base (52bd736) to head (4c86121).
⚠️ Report is 1 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3680      +/-   ##
==========================================
+ Coverage   71.72%   71.74%   +0.02%     
==========================================
  Files         445      445              
  Lines       17649    17663      +14     
==========================================
+ Hits        12658    12672      +14     
  Misses       4991     4991              

Flag	Coverage Δ
unittests-Instrumentation.EntityFrameworkCore	80.80% <ø> (ø)
unittests-Instrumentation.SqlClient	87.46% <100.00%> (+0.43%)	⬆️

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

Files with missing lines	Coverage Δ
...ient/Implementation/SqlClientDiagnosticListener.cs	88.07% <100.00%> (ø)
...ent/Implementation/SqlEventSourceListener.netfx.cs	79.61% <100.00%> (ø)
...ion.SqlClient/Implementation/SqlTelemetryHelper.cs	95.52% <100.00%> (ø)
...lClient/SqlClientMeterProviderBuilderExtensions.cs	100.00% <100.00%> (ø)
...ation.SqlClient/TracerProviderBuilderExtensions.cs	100.00% <100.00%> (ø)

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[Kielek]

AOT CI blocked by #3677