fix: move eslint-config-prettier to devDeps

Author: joscha

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@canva/dependency-tree",
-  "version": "3.0.0",
+  "version": "3.0.1",
   "description": "Calculates a dependency tree for set of files",
   "main": "dist/index.js",
   "author": "Canva Pty Ltd",
@@ -34,7 +34,6 @@
     "debug": "^4.3.1",
     "detective-postcss": "^3.0.1",
     "enhanced-resolve": "^4.1.0",
-    "eslint-config-prettier": "^8.1.0",
     "esquery": "^1.3.1",
     "fast-glob": "^3.0.4",
     "gherkin": "^7.0.3",
@@ -56,6 +55,7 @@
     "@typescript-eslint/eslint-plugin": "^4.21.0",
     "@typescript-eslint/parser": "^4.21.0",
     "eslint": "^7.24.0",
+    "eslint-config-prettier": "^8.1.0",
     "eslint-plugin-jest": "^24.3.5",
     "jest": "^26.6.3",
     "prettier": "2.2.1",