Bump OpenTelemetry.Exporter.OpenTelemetryProtocol from 1.8.1 to 1.9.0

Bumps [OpenTelemetry.Exporter.OpenTelemetryProtocol](https://github.com/open-telemetry/opentelemetry-dotnet) from 1.8.1 to 1.9.0.
- [Release notes](https://github.com/open-telemetry/opentelemetry-dotnet/releases)
- [Commits](open-telemetry/opentelemetry-dotnet@core-1.8.1...core-1.9.0)

---
updated-dependencies:
- dependency-name: OpenTelemetry.Exporter.OpenTelemetryProtocol
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -57,7 +57,7 @@
     <PackageVersion Include="Microsoft.SemanticKernel" Version="1.12.0" />
     <PackageVersion Include="Microsoft.SemanticKernel.Connectors.Onnx" Version="1.10.0-alpha" />
     <!-- Open Telemetry -->
-    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.8.1" />
+    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.9.0" />
     <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.8.1" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.8.1" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.GrpcNetClient" Version="1.6.0-beta.3" />