Update dependency cypress to v5.6.0

Author: renovate-bot

package-lock.json

@@ -65,7 +65,7 @@
     "browserify-transform-tools": "1.7.0",
     "css-loader": "4.3.0",
     "cssnano": "4.1.10",
-    "cypress": "5.5.0",
+    "cypress": "5.6.0",
     "eliminate": "1.1.2",
     "eslint": "7.12.1",
     "eslint-plugin-mdx": "1.8.2",