build(deps): bump OpenTelemetry.Exporter.OpenTelemetryProtocol

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] <support@github.com>

Directory.Packages.props

@@ -58,7 +58,7 @@
     <PackageVersion Include="EntityFrameworkCore.Exceptions.PostgreSQL" Version="8.1.2" />
     <!-- OpenTelemetry -->
     <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.8.1" />
-    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.8.1" />
+    <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.9.0" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.Http" Version="1.8.1" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.Runtime" Version="1.8.1" />
     <PackageVersion Include="OpenTelemetry.Instrumentation.AspNetCore" Version="1.8.1" />