Upgrade to Go 1.19 (#2347)

sdk/pbs/controller/api/resources/targets/target.pb.go

@@ -418,6 +418,7 @@ type Target struct {
 	// Output only. The injected application credential sources associated with this Target.
 	InjectedApplicationCredentialSources []*CredentialSource `protobuf:"bytes,530,rep,name=injected_application_credential_sources,proto3" json:"injected_application_credential_sources,omitempty"`
 	// Types that are assignable to Attrs:
+	//
 	//	*Target_Attributes
 	//	*Target_TcpTargetAttributes
 	//	*Target_SshTargetAttributes