Bump OpenTelemetry.Instrumentation.AspNetCore

Bumps [OpenTelemetry.Instrumentation.AspNetCore](https://github.com/open-telemetry/opentelemetry-dotnet) from 1.0.0-rc9.14 to 1.8.1.
- [Release notes](https://github.com/open-telemetry/opentelemetry-dotnet/releases)
- [Changelog](https://github.com/open-telemetry/opentelemetry-dotnet/blob/main/RELEASENOTES.md)
- [Commits](open-telemetry/opentelemetry-dotnet@1.0.0-rc9.14...core-1.8.1)

---
updated-dependencies:
- dependency-name: OpenTelemetry.Instrumentation.AspNetCore
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

sample-apps/dotnet-sample-app/dotnet-sample-app.csproj

@@ -9,7 +9,7 @@
     <PackageReference Include="OpenTelemetry.Contrib.Extensions.AWSXRay" Version="1.2.0" />
     <PackageReference Include="OpenTelemetry.Contrib.Instrumentation.AWS" Version="1.0.2" />
     <PackageReference Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.7.0" />
-    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.0.0-rc9.14" />
+    <PackageReference Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.8.1" />
     <PackageReference Include="OpenTelemetry.Instrumentation.Http" Version="1.0.0-rc9.14" />
     <PackageReference Include="System.Diagnostics.DiagnosticSource" Version="8.0.0" />
     <PackageReference Include="YamlDotNet" Version="13.7.1" />