Upgrade protoc and protoc-gen-go-grpc versions to matching terraform-plugin-go (#37647)

* Update protoc version in downloader script

* go get google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.5.1

This matched terraform-plugin-go

* make protobuf

* Run `make protobuf`

* Update generator to handle generic types from google.golang.org/grpc

Looks like this was added in v1.69.3 in grpc/grpc-go#7057 ?

* Run `make generate`

* Fix "cannot infer Res" compile error - more usage of generics

* More fixing compile errors due to switching to use of a generic

* Make putting `google.golang.org/grpc` import into generated files conditional

* Run `make generate`

* Update more places where generics now need to be used

* Update generator to handle any types from google.golang.org/grpc in same switch case.

Author: SarahFrench

go.mod

@@ -82,7 +82,7 @@ require (
 	golang.org/x/tools v0.36.0
 	golang.org/x/tools/cmd/cover v0.1.0-deprecated
 	google.golang.org/grpc v1.69.4
-	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.3.0
+	google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.5.1
 	google.golang.org/protobuf v1.36.6
 	honnef.co/go/tools v0.6.0
 )

go.sum

@@ -1278,8 +1278,8 @@ google.golang.org/grpc v1.35.0/go.mod h1:qjiiYl8FncCW8feJPdyg3v6XW24KsRHe+dy9BAG
 google.golang.org/grpc v1.38.0/go.mod h1:NREThFqKR1f3iQ6oBuvc5LadQuXVGo9rkm5ZGrQdJfM=
 google.golang.org/grpc v1.69.4 h1:MF5TftSMkd8GLw/m0KM6V8CMOCY6NZ1NQDPGFgbTt4A=
 google.golang.org/grpc v1.69.4/go.mod h1:vyjdE6jLBI76dgpDojsFGNaHlxdjXN9ghpnd2o7JGZ4=
-google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.3.0 h1:rNBFJjBCOgVr9pWD7rs/knKL4FRTKgpZmsRfV214zcA=
-google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.3.0/go.mod h1:Dk1tviKTvMCz5tvh7t+fh94dhmQVHuCt2OzJB3CTW9Y=
+google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.5.1 h1:F29+wU6Ee6qgu9TddPgooOdaqsxTMunOoj8KA5yuS5A=
+google.golang.org/grpc/cmd/protoc-gen-go-grpc v1.5.1/go.mod h1:5KF+wpkbTSbGcR9zteSqZV6fqFOWBl4Yde8En8MryZA=
 google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
 google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
 google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=

internal/cloudplugin/cloudplugin1/grpc_client_test.go

@@ -18,7 +18,7 @@ import (
 
 var mockError = "this is a mock error"
 
-func testGRPCloudClient(t *testing.T, ctrl *gomock.Controller, client *mock_cloudproto1.MockCommandService_ExecuteClient, executeError error) *GRPCCloudClient {
+func testGRPCloudClient(t *testing.T, ctrl *gomock.Controller, client *mock_cloudproto1.MockCommandService_ExecuteClient[cloudproto1.CommandResponse], executeError error) *GRPCCloudClient {
 	t.Helper()
 
 	if client != nil && executeError != nil {
@@ -57,7 +57,7 @@ func Test_GRPCCloudClient_ExecuteError(t *testing.T) {
 
 func Test_GRPCCloudClient_Execute_RecvError(t *testing.T) {
 	ctrl := gomock.NewController(t)
-	executeClient := mock_cloudproto1.NewMockCommandService_ExecuteClient(ctrl)
+	executeClient := mock_cloudproto1.NewMockCommandService_ExecuteClient[cloudproto1.CommandResponse](ctrl)
 	executeClient.EXPECT().Recv().Return(nil, errors.New(mockError))
 
 	gRPCClient := testGRPCloudClient(t, ctrl, executeClient, nil)
@@ -78,7 +78,7 @@ func Test_GRPCCloudClient_Execute_RecvError(t *testing.T) {
 
 func Test_GRPCCloudClient_Execute_Invalid_Exit(t *testing.T) {
 	ctrl := gomock.NewController(t)
-	executeClient := mock_cloudproto1.NewMockCommandService_ExecuteClient(ctrl)
+	executeClient := mock_cloudproto1.NewMockCommandService_ExecuteClient[cloudproto1.CommandResponse](ctrl)
 
 	executeClient.EXPECT().Recv().Return(
 		&cloudproto1.CommandResponse{
@@ -99,7 +99,7 @@ func Test_GRPCCloudClient_Execute_Invalid_Exit(t *testing.T) {
 
 func Test_GRPCCloudClient_Execute(t *testing.T) {
 	ctrl := gomock.NewController(t)
-	executeClient := mock_cloudproto1.NewMockCommandService_ExecuteClient(ctrl)
+	executeClient := mock_cloudproto1.NewMockCommandService_ExecuteClient[cloudproto1.CommandResponse](ctrl)
 
 	gomock.InOrder(
 		executeClient.EXPECT().Recv().Return(