Upgrade to Grpc.Core.Api to 2.29 (#906)

Author: jtattermusch

build/dependencies.props

@@ -3,7 +3,7 @@
     <BenchmarkDotNetPackageVersion>0.12.1</BenchmarkDotNetPackageVersion>
     <GoogleProtobufPackageVersion>3.11.4</GoogleProtobufPackageVersion>
     <GrpcDotNetPackageVersion>2.28.0-pre2</GrpcDotNetPackageVersion>  <!-- Only use for example projects -->
-    <GrpcPackageVersion>2.28.0</GrpcPackageVersion>
+    <GrpcPackageVersion>2.29.0</GrpcPackageVersion>
     <MicrosoftAspNetCorePackageVersion>3.1.3</MicrosoftAspNetCorePackageVersion>
     <MicrosoftAspNetCoreBlazorPackageVersion>3.2.0-rc1.20223.4</MicrosoftAspNetCoreBlazorPackageVersion>
     <MicrosoftBuildLocatorPackageVersion>1.2.2</MicrosoftBuildLocatorPackageVersion>