Use search-closest to search Prettier config and Project root (#17412)

.github/renovate.json5

@@ -53,6 +53,10 @@
       groupName: "Regex related dependencies",
       matchPackageNames: ["regexp-util", "unicode-regex", "cjk-regex"],
     },
+    {
+      groupName: "Config search related dependencies",
+      matchPackageNames: ["url-or-path", "search-closest"],
+    },
     {
       branchPrefix: "renovate/website/",
       matchFileNames: ["website/package.json"],