Regenerate securitycenter client (googleapis#4667)

Author: yoshi-automation

google-api-grpc/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/AssetOuterClass.java

@@ -22,6 +22,7 @@ import "google/cloud/securitycenter/v1/security_marks.proto";
 import "google/protobuf/struct.proto";
 import "google/protobuf/timestamp.proto";
 
+option csharp_namespace = "Google.Cloud.SecurityCenter.V1";
 option go_package = "google.golang.org/genproto/googleapis/cloud/securitycenter/v1;securitycenter";
 option java_multiple_files = true;
 option java_package = "com.google.cloud.securitycenter.v1";

google-api-grpc/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/FindingOuterClass.java

@@ -22,6 +22,7 @@ import "google/cloud/securitycenter/v1/security_marks.proto";
 import "google/protobuf/struct.proto";
 import "google/protobuf/timestamp.proto";
 
+option csharp_namespace = "Google.Cloud.SecurityCenter.V1";
 option go_package = "google.golang.org/genproto/googleapis/cloud/securitycenter/v1;securitycenter";
 option java_multiple_files = true;
 option java_package = "com.google.cloud.securitycenter.v1";

google-api-grpc/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/OrganizationSettingsOuterClass.java

@@ -19,6 +19,7 @@ package google.cloud.securitycenter.v1;
 
 import "google/api/annotations.proto";
 
+option csharp_namespace = "Google.Cloud.SecurityCenter.V1";
 option go_package = "google.golang.org/genproto/googleapis/cloud/securitycenter/v1;securitycenter";
 option java_multiple_files = true;
 option java_package = "com.google.cloud.securitycenter.v1";

google-api-grpc/proto-google-cloud-securitycenter-v1/src/main/java/com/google/cloud/securitycenter/v1/SecurityMarksOuterClass.java

@@ -19,6 +19,7 @@ package google.cloud.securitycenter.v1;
 
 import "google/api/annotations.proto";
 
+option csharp_namespace = "Google.Cloud.SecurityCenter.V1";
 option go_package = "google.golang.org/genproto/googleapis/cloud/securitycenter/v1;securitycenter";
 option java_multiple_files = true;
 option java_package = "com.google.cloud.securitycenter.v1";