Resolve #3410630 "Update billboard.js and"

Closes #3410630

modules/charts_billboard/README.md

@@ -34,13 +34,13 @@ directories other than "/vendor" (e.g. "/libraries") using Composer.
              "type": "package",
              "package": {
                  "name": "d3/d3",
-                 "version": "6.7.0",
+                 "version": "7.8.5",
                  "type": "drupal-library",
                  "extra": {
                      "installer-name": "d3"
                  },
                  "dist": {
-                     "url": "https://cdnjs.cloudflare.com/ajax/libs/d3/6.7.0/d3.js",
+                     "url": "https://cdnjs.cloudflare.com/ajax/libs/d3/7.8.5/d3.js",
                      "type": "file"
                  },
                  "require": {