Update dependency eslint-config-prettier to v6.15.0

Author: renovate-bot

package.json

@@ -14,7 +14,7 @@
     "dotenv": "8.2.0",
     "eslint": "7.2.0",
     "eslint-config-airbnb-base": "14.1.0",
-    "eslint-config-prettier": "6.11.0",
+    "eslint-config-prettier": "6.15.0",
     "eslint-plugin-import": "2.21.2",
     "eslint-plugin-jest": "23.13.2",
     "eslint-plugin-prettier": "3.1.3",