Update cel-go to v0.21.0

vendor/github.com/google/cel-go/common/error.go

@@ -18,8 +18,6 @@ import (
 	"fmt"
 	"strings"
 	"unicode/utf8"
-
-	"golang.org/x/text/width"
 )
 
 // NewError creates an error associated with an expression id with the given message at the given location.
@@ -35,18 +33,15 @@ type Error struct {
 }
 
 const (
-	dot = "."
-	ind = "^"
+	dot     = "."
+	ind     = "^"
+	wideDot = "\uff0e"
+	wideInd = "\uff3e"
 
 	// maxSnippetLength is the largest number of characters which can be rendered in an error message snippet.
 	maxSnippetLength = 16384
 )
 
-var (
-	wideDot = width.Widen.String(dot)
-	wideInd = width.Widen.String(ind)
-)
-
 // ToDisplayString decorates the error message with the source location.
 func (e *Error) ToDisplayString(source Source) string {
 	var result = fmt.Sprintf("ERROR: %s:%d:%d: %s",