lib: use focused ESLint disabling in util.js

Instead of disabling all ESLint rules for two lines that require a
violation of no-control-regex, disable only the no-control-regex rule.

PR-URL: nodejs#21041
Reviewed-By: Gus Caplan <me@gus.host>
Reviewed-By: Vse Mozhet Byt <vsemozhetbyt@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Weijia Wang <starkwang@126.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>

lib/util.js

@@ -87,10 +87,11 @@ const errorToString = Error.prototype.toString;
 let CIRCULAR_ERROR_MESSAGE;
 let internalDeepEqual;
 
-/* eslint-disable */
+/* eslint-disable no-control-regex */
 const strEscapeSequencesRegExp = /[\x00-\x1f\x27\x5c]/;
 const strEscapeSequencesReplacer = /[\x00-\x1f\x27\x5c]/g;
-/* eslint-enable */
+/* eslint-enable no-control-regex */
+
 const keyStrRegExp = /^[a-zA-Z_][a-zA-Z_0-9]*$/;
 const numberRegExp = /^(0|[1-9][0-9]*)$/;