fix: allow cypress@6 in peer dependencies (#165)

Author: SimenB

package.json

@@ -51,7 +51,7 @@
     "typescript": "^4.0.5"
   },
   "peerDependencies": {
-    "cypress": "^2.1.0 || ^3.0.0 || ^4.0.0 || ^5.0.0"
+    "cypress": "^2.1.0 || ^3.0.0 || ^4.0.0 || ^5.0.0 || ^6.0.0"
   },
   "eslintConfig": {
     "extends": "./node_modules/kcd-scripts/eslint.js",