Update dependency eslint-config-prettier to v6.15.0

Author: renovate-bot

packages/eslint-config-onefx/package.json

@@ -10,7 +10,7 @@
     "@typescript-eslint/eslint-plugin": "4.1.0",
     "@typescript-eslint/parser": "4.1.0",
     "eslint-config-airbnb-base": "14.2.0",
-    "eslint-config-prettier": "6.11.0",
+    "eslint-config-prettier": "6.15.0",
     "eslint-plugin-import": "2.22.0",
     "typescript": "^4.0.2"
   },