chore(deps): bump the nuget-agent group across 1 directory with 2 updates (#3072)

Bumps the nuget-agent group with 2 updates in the /src/Agent/NewRelic/Agent/Core directory: [Google.Protobuf](https://github.com/protocolbuffers/protobuf) and [Microsoft.NETFramework.ReferenceAssemblies](https://github.com/Microsoft/dotnet).


Updates `Google.Protobuf` from 3.30.1 to 3.30.2
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](https://github.com/protocolbuffers/protobuf/commits)

Updates `Microsoft.NETFramework.ReferenceAssemblies` from 1.0.3 to 1.0.3
- [Commits](https://github.com/Microsoft/dotnet/commits)

---
updated-dependencies:
- dependency-name: Google.Protobuf
  dependency-version: 3.30.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: nuget-agent
- dependency-name: Microsoft.NETFramework.ReferenceAssemblies
  dependency-version: 1.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: nuget-agent
...

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Author: dependabot[bot]

src/Agent/NewRelic/Agent/Core/Core.csproj

@@ -38,7 +38,7 @@
 
   <ItemGroup>
     <PackageReference Include="Autofac" Version="4.5.0" />
-    <PackageReference Include="Google.Protobuf" Version="3.30.1" />
+    <PackageReference Include="Google.Protobuf" Version="3.30.2" />
     <PackageReference Include="Grpc.Tools" Version="2.71.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>