chore:(deps): bump core-js from 3.13.1 to 3.15.0 (#943)

Author: dependabot[bot]

package-lock.json

@@ -41,7 +41,7 @@
     "@types/d3-hierarchy": "^2.0.0",
     "@types/d3-transition": "1.1.5",
     "apollo-angular": "^2.6.0",
-    "core-js": "^3.13.1",
+    "core-js": "^3.15.0",
     "d3-array": "^2.12.0",
     "d3-axis": "^2.1.0",
     "d3-brush": "^1.1.6",