Move eslint-config-prettier to devDependencies. Resolves #5.

Author: Joel Denning

package.json

@@ -35,13 +35,11 @@
     "@types/mocha": "^8.0.0",
     "eslint": "^7.5.0",
     "eslint-config-node-important-stuff": "^1.1.0",
+    "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-prettier": "^3.1.4",
     "husky": "^4.2.5",
     "mocha": "^8.0.1",
     "prettier": "^2.0.5",
     "pretty-quick": "^2.0.1"
-  },
-  "dependencies": {
-    "eslint-config-prettier": "^6.11.0"
   }
 }