chore: bump OpenFeature.Contrib.GOFeatureFlag

Bumps [OpenFeature.Contrib.GOFeatureFlag](https://github.com/open-feature/dotnet-sdk-contrib) from 0.1.8 to 0.1.9.
- [Release notes](https://github.com/open-feature/dotnet-sdk-contrib/releases)
- [Changelog](https://github.com/open-feature/dotnet-sdk-contrib/blob/main/release-please-config.json)
- [Commits](open-feature/dotnet-sdk-contrib@OpenFeature.Contrib.Providers.Flagd-v0.1.8...OpenFeature.Contrib.Providers.Flagd-v0.1.9)

---
updated-dependencies:
- dependency-name: OpenFeature.Contrib.GOFeatureFlag
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

openfeature/provider_tests/dotnet-integration-tests/ProviderTests/ProviderTests.csproj

@@ -17,7 +17,7 @@
         <PackageReference Include="NUnit.Analyzers" Version="4.3.0" />
         <PackageReference Include="coverlet.collector" Version="6.0.2" />
         <PackageReference Include="OpenFeature" Version="1.6.0" />
-        <PackageReference Include="OpenFeature.Contrib.GOFeatureFlag" Version="0.1.8" />
+        <PackageReference Include="OpenFeature.Contrib.GOFeatureFlag" Version="0.1.9" />
     </ItemGroup>
 
 </Project>