MINOR: [C#] Bump Grpc.Net.Client from 2.57.0 to 2.58.0 in /csharp

Bumps [Grpc.Net.Client](https://github.com/grpc/grpc-dotnet) from 2.57.0 to 2.58.0.
- [Release notes](https://github.com/grpc/grpc-dotnet/releases)
- [Changelog](https://github.com/grpc/grpc-dotnet/blob/master/doc/release_process.md)
- [Commits](grpc/grpc-dotnet@v2.57.0...v2.58.0)

---
updated-dependencies:
- dependency-name: Grpc.Net.Client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

csharp/src/Apache.Arrow.Flight/Apache.Arrow.Flight.csproj

@@ -6,7 +6,7 @@
 
   <ItemGroup>
     <PackageReference Include="Google.Protobuf" Version="3.24.4" />
-    <PackageReference Include="Grpc.Net.Client" Version="2.57.0" />
+    <PackageReference Include="Grpc.Net.Client" Version="2.58.0" />
     <PackageReference Include="Grpc.Tools" Version="2.58.0" PrivateAssets="All" />
   </ItemGroup>