Update dependency core-js to v3

Author: renovate[bot]

assets/jquery/package.json

@@ -27,7 +27,7 @@
     "@babel/core": "7.13.15",
     "@babel/plugin-transform-for-of": "7.13.0",
     "commitplease": "3.2.0",
-    "core-js": "2.6.12",
+    "core-js": "3.29.1",
     "eslint-config-jquery": "3.0.0",
     "grunt": "1.3.0",
     "grunt-babel": "8.0.0",