Bump Google.Protobuf from 3.28.2 to 3.28.3

Bumps [Google.Protobuf](https://github.com/protocolbuffers/protobuf) from 3.28.2 to 3.28.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.28.2...v3.28.3)

---
updated-dependencies:
- dependency-name: Google.Protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/Directory.Packages.props

@@ -63,7 +63,7 @@
     <PackageVersion Include="ZstdSharp.Port" Version="0.7.3" />
   </ItemGroup>
   <ItemGroup Label="Transient dependencies auto-generated by GenerateNetFxTransientDependencies">
-    <PackageVersion Include="Google.Protobuf" Version="3.28.2" />
+    <PackageVersion Include="Google.Protobuf" Version="3.28.3" />
     <PackageVersion Include="Grpc" Version="2.46.6" />
     <PackageVersion Include="Grpc.Core" Version="2.46.6" />
     <PackageVersion Include="Grpc.Core.Api" Version="2.66.0" />

test/Directory.Packages.props

@@ -5,7 +5,7 @@
     <PackageVersion Include="Elastic.Clients.Elasticsearch" Version="8.15.10" />
     <PackageVersion Include="Confluent.Kafka" Version="2.5.3" />
     <PackageVersion Include="FluentAssertions" Version="6.12.1" />
-    <PackageVersion Include="Google.Protobuf" Version="3.28.2" />
+    <PackageVersion Include="Google.Protobuf" Version="3.28.3" />
     <PackageVersion Include="GraphQL" Version="8.0.2" />
     <PackageVersion Include="GraphQL.MicrosoftDI" Version="8.0.2" />
     <PackageVersion Include="GraphQL.Server.Transports.AspNetCore" Version="8.0.2" />