url: replaced slice with at

Author: Connormiha

lib/url.js

@@ -919,7 +919,7 @@ Url.prototype.resolveObject = function resolveObject(relative) {
   // If a url ENDs in . or .., then it must get a trailing slash.
   // however, if it ends in anything else non-slashy,
   // then it must NOT get a trailing slash.
-  let last = srcPath.slice(-1)[0];
+  let last = srcPath.at(-1);
   const hasTrailingSlash = (
     ((result.host || relative.host || srcPath.length > 1) &&
     (last === '.' || last === '..')) || last === '');
@@ -952,7 +952,7 @@ Url.prototype.resolveObject = function resolveObject(relative) {
     srcPath.unshift('');
   }
 
-  if (hasTrailingSlash && (srcPath.join('/').slice(-1) !== '/')) {
+  if (hasTrailingSlash && (srcPath.join('/').at(-1) !== '/')) {
     srcPath.push('');
   }