fix lint

Author: qmuntal

go/cmd/bundler/main.go

@@ -229,7 +229,7 @@ func fetchCLIVersionFromRepo(sdkVersion string) (string, error) {
 // isHex returns true if s contains only hexadecimal characters.
 func isHex(s string) bool {
 	for _, c := range s {
-		if !((c >= '0' && c <= '9') || (c >= 'a' && c <= 'f') || (c >= 'A' && c <= 'F')) {
+		if (c < '0' || c > '9') && (c < 'a' || c > 'f') && (c < 'A' || c > 'F') {
 			return false
 		}
 	}