chore: bump gRPC versions and centralize them

Author: jskeet

Directory.Packages.props

@@ -1,8 +1,13 @@
 <Project>
   <ItemGroup>
-    <!-- Default Grpc.Core versions: these should typically be changed together -->
+    <!--
+      - Default Grpc.Core versions: these should typically be
+      - changed together, usually matching the version used by GAX.
+      -->
     <PackageVersion Include="Grpc.Core" Version="[2.46.6, 3.0.0)" />
     <PackageVersion Include="Grpc.Core.Testing" Version="[2.46.6, 3.0.0)" />
+    <PackageVersion Include="Grpc.Core.Api" Version="[2.71.0, 3.0.0)" />
+    <PackageVersion Include="Grpc.Net.Client" Version="[2.71.0, 3.0.0)" />
 
     <!-- Default GAX versions: these should typically be changed together -->
     <PackageVersion Include="Google.Api.Gax" Version="[4.12.1, 5.0.0)" />
@@ -11,6 +16,9 @@
     <PackageVersion Include="Google.Api.Gax.Testing" Version="[4.12.1, 5.0.0)" />
     <PackageVersion Include="Google.Api.Gax.Grpc.Testing" Version="[4.12.1, 5.0.0)" />
 
+    <!-- Support libraries (rarely referenced directly) -->
+    <PackageVersion Include="Google.Apis" Version="[1.73.0, 2.0.0)" />
+
     <!--
       - The Google.Protobuf version should usually be the one that
       - the current Google.Api.CommonProtos version depends on.
@@ -59,7 +67,7 @@
     <PackageVersion Include="System.ValueTuple" Version="4.6.1" />
     <PackageVersion Include="log4net" Version="2.0.17" />
     <PackageVersion Include="NLog" Version="5.5.1" />
-    <PackageVersion Include="Grpc.AspNetCore" Version="2.40.0" />
+    <PackageVersion Include="Grpc.AspNetCore" Version="2.76.0" />
     <PackageVersion Include="Microsoft.AspNetCore.Server.Kestrel.Core" Version="2.3.9" />
   </ItemGroup>
 </Project>

tools/Google.Cloud.ClientTesting/Google.Cloud.ClientTesting.csproj

@@ -14,8 +14,8 @@
     <PackageReference Include="xunit.assert" />
     <PackageReference Include="xunit.core" />
     <PackageReference Include="Xunit.SkippableFact" />
-    <PackageReference Include="Google.Apis" VersionOverride="1.73.0" />
-    <PackageReference Include="Grpc.Core.Api" VersionOverride="2.66.0" />
+    <PackageReference Include="Google.Apis" />
+    <PackageReference Include="Grpc.Core.Api" />
     <PackageReference Include="Google.Api.Gax" />
     <PackageReference Include="Google.Protobuf" />
   </ItemGroup>

tools/Google.Cloud.Tools.ReleaseManager/Google.Cloud.Tools.ReleaseManager.csproj

@@ -18,7 +18,7 @@
      - this binary refers to. Without this, we end up loading the netstandard2.0 TFM
      - for libraries which target that, and that then fails to use the channel.
      -->
-    <PackageReference Include="Grpc.Net.Client" VersionOverride="2.71.0" />
+    <PackageReference Include="Grpc.Net.Client" />
 
     <!-- Ensure that we've got the default version of GAX available. -->
     <PackageReference Include="Google.Api.Gax.Grpc" />