fix(deps): update dependency @cypress/webpack-preprocessor to v5.4.6

Author: renovate-bot

package-lock.json

@@ -137,7 +137,7 @@
   "dependencies": {
     "@babel/plugin-transform-modules-commonjs": "7.10.4",
     "@cypress/code-coverage": "3.8.1",
-    "@cypress/webpack-preprocessor": "5.4.5",
+    "@cypress/webpack-preprocessor": "5.4.6",
     "babel-plugin-istanbul": "6.0.0",
     "debug": "4.1.1",
     "find-webpack": "2.1.0",