Bump the dotnet group with 4 updates

Bumps the dotnet group with 4 updates: [Google.Protobuf](https://github.com/protocolbuffers/protobuf), [Grpc.Tools](https://github.com/grpc/grpc), [coverlet.collector](https://github.com/coverlet-coverage/coverlet) and [xunit.runner.visualstudio](https://github.com/xunit/visualstudio.xunit).


Updates `Google.Protobuf` from 3.29.0 to 3.29.2
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v3.29.0...v3.29.2)

Updates `Grpc.Tools` from 2.67.0 to 2.68.1
- [Release notes](https://github.com/grpc/grpc/releases)
- [Changelog](https://github.com/grpc/grpc/blob/master/doc/grpc_release_schedule.md)
- [Commits](https://github.com/grpc/grpc/commits)

Updates `coverlet.collector` from 6.0.2 to 6.0.3
- [Release notes](https://github.com/coverlet-coverage/coverlet/releases)
- [Commits](coverlet-coverage/coverlet@v6.0.2...v6.0.3)

Updates `xunit.runner.visualstudio` from 2.8.2 to 3.0.0
- [Release notes](https://github.com/xunit/visualstudio.xunit/releases)
- [Commits](xunit/visualstudio.xunit@2.8.2...3.0.0)

---
updated-dependencies:
- dependency-name: Google.Protobuf
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: Grpc.Tools
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dotnet
- dependency-name: coverlet.collector
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
- dependency-name: xunit.runner.visualstudio
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: dotnet
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

src/Authzed.Net/Authzed.Net.csproj

@@ -30,10 +30,10 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Google.Protobuf" Version="3.29.0" />
+    <PackageReference Include="Google.Protobuf" Version="3.29.2" />
     <PackageReference Include="Grpc.Core" Version="2.46.6" />
     <PackageReference Include="Grpc.Net.Client" Version="2.67.0" />
-    <PackageReference Include="Grpc.Tools" Version="2.67.0">
+    <PackageReference Include="Grpc.Tools" Version="2.68.1">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>

tests/Authzed.Net.Tests/Authzed.Net.Tests.csproj

@@ -12,11 +12,11 @@
   <ItemGroup>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="xunit" Version="2.9.2" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2">
+    <PackageReference Include="xunit.runner.visualstudio" Version="3.0.0">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="coverlet.collector" Version="6.0.2">
+    <PackageReference Include="coverlet.collector" Version="6.0.3">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>