Update github.com/googleapis/gnostic to v0.5.5 and updating transitive dependencies go-cmp, protobuf,, to adapt the latest gnostic release which cosists of [Update protos for Go protoc plugin compatibility]

vendor/github.com/googleapis/gnostic/compiler/error.go

@@ -14,6 +14,8 @@
 
 package compiler
 
+import "fmt"
+
 // Error represents compiler errors and their location in the document.
 type Error struct {
 	Context *Context
@@ -25,12 +27,19 @@ func NewError(context *Context, message string) *Error {
 	return &Error{Context: context, Message: message}
 }
 
+func (err *Error) locationDescription() string {
+	if err.Context.Node != nil {
+		return fmt.Sprintf("[%d,%d] %s", err.Context.Node.Line, err.Context.Node.Column, err.Context.Description())
+	}
+	return err.Context.Description()
+}
+
 // Error returns the string value of an Error.
 func (err *Error) Error() string {
 	if err.Context == nil {
-		return "ERROR " + err.Message
+		return err.Message
 	}
-	return "ERROR " + err.Context.Description() + " " + err.Message
+	return err.locationDescription() + " " + err.Message
 }
 
 // ErrorGroup is a container for groups of Error values.