Update dependency eslint-config-prettier to v6.15.0

Author: renovate-bot

package.json

@@ -99,7 +99,7 @@
     "enzyme-adapter-react-16": "1.15.4",
     "eslint": "6.8.0",
     "eslint-config-airbnb": "18.2.0",
-    "eslint-config-prettier": "6.14.0",
+    "eslint-config-prettier": "6.15.0",
     "eslint-loader": "4.0.2",
     "eslint-plugin-import": "2.22.0",
     "eslint-plugin-jest": "23.20.0",