Bump the dotnet group (#46030)

Bumps the dotnet group in /docs/core/diagnostics/snippets/OTLP-Example/csharp with 2 updates: [OpenTelemetry.Instrumentation.AspNetCore](https://github.com/open-telemetry/opentelemetry-dotnet-contrib) and [OpenTelemetry.Instrumentation.Http](https://github.com/open-telemetry/opentelemetry-dotnet-contrib).


Updates `OpenTelemetry.Instrumentation.AspNetCore` from 1.11.1 to 1.12.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/releases)
- [Commits](open-telemetry/opentelemetry-dotnet-contrib@Resources.AWS-1.11.1...Instrumentation.AWS-1.12.0)

Updates `OpenTelemetry.Instrumentation.Http` from 1.11.1 to 1.12.0
- [Release notes](https://github.com/open-telemetry/opentelemetry-dotnet-contrib/releases)
- [Commits](open-telemetry/opentelemetry-dotnet-contrib@Resources.AWS-1.11.1...Instrumentation.AWS-1.12.0)

---
updated-dependencies:
- dependency-name: OpenTelemetry.Instrumentation.AspNetCore
  dependency-version: 1.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: OpenTelemetry.Instrumentation.Http
  dependency-version: 1.12.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/core/diagnostics/snippets/OTLP-Example/csharp/OTLP-Example.csproj

@@ -11,8 +11,8 @@
     <PackageReference Include="OpenTelemetry.Exporter.Console" Version="1.12.0" />
     <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.12.0" />
     <PackageReference Include="OpenTelemetry.Extensions.Hosting" Version="1.12.0" />
-    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.11.1" />
-    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.11.1" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.12.0" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.12.0" />
   </ItemGroup>
 
 <ItemGroup>