Fix #2379 by using v7 of supports-color

Forces the users on ES2018, while we say we use ES2017

Author: fatso83

package-lock.json

@@ -76,7 +76,7 @@
     "@sinonjs/samsam": "^6.0.2",
     "diff": "^5.0.0",
     "nise": "^5.1.0",
-    "supports-color": "^8.1.1"
+    "supports-color": "^7.2.0"
   },
   "devDependencies": {
     "@babel/core": "^7.14.3",