Group @babel/* PRs except @babel/parser (#12933)

.github/renovate.json5

@@ -9,6 +9,11 @@
       matchPackageNames: ["react", "react-dom"],
       groupName: "react",
     },
+    {
+      matchPackagePrefixes: ["@babel/"],
+      excludePackageNames: ["@babel/parser"],
+      groupName: "babel",
+    },
     {
       branchPrefix: "renovate/website/",
       matchPaths: ["website/package.json"],