Update Grpc.Core.Api dependency to 2.42.0 (#1539)

Co-authored-by: James Newton-King <[email protected]>

Author: jtattermusch

build/dependencies.props

@@ -1,9 +1,9 @@
 <Project>
   <PropertyGroup>
     <BenchmarkDotNetPackageVersion>0.12.1</BenchmarkDotNetPackageVersion>
-    <GoogleProtobufPackageVersion>3.18.0</GoogleProtobufPackageVersion>
+    <GoogleProtobufPackageVersion>3.18.1</GoogleProtobufPackageVersion>
     <GrpcDotNetPackageVersion>2.41.0-pre1</GrpcDotNetPackageVersion>  <!-- Used by example projects -->
-    <GrpcPackageVersion>2.41.0</GrpcPackageVersion>
+    <GrpcPackageVersion>2.42.0</GrpcPackageVersion>
     <MicrosoftAspNetCoreAppPackageVersion>6.0.0</MicrosoftAspNetCoreAppPackageVersion>
     <MicrosoftAspNetCoreApp5PackageVersion>5.0.3</MicrosoftAspNetCoreApp5PackageVersion>
     <MicrosoftAspNetCoreApp31PackageVersion>3.1.3</MicrosoftAspNetCoreApp31PackageVersion>