Revert "Update dependencies & URL slash bugfix (#36)" (#38)

This reverts commit c244c007e1.

package.json

@@ -20,7 +20,7 @@
     "cheerio": "^1.0.0-rc.10",
     "framer-motion": "^4",
     "graphql": "^15.5.0",
-    "next": "11.0.2-canary.6",
+    "next": "10.2.3",
     "next-pwa": "^5.2.21",
     "nextjs-cors": "^1.0.5",
     "react": "17.0.2",
@@ -45,7 +45,6 @@
     "babel-eslint": "^10.0.0",
     "cypress": "^7.5.0",
     "eslint": "^7.5.0",
-    "eslint-config-next": "^11.0.1",
     "eslint-config-react-app": "^6.0.0",
     "eslint-plugin-cypress": "^2.11.3",
     "eslint-plugin-flowtype": "^5.2.0",
@@ -66,8 +65,7 @@
     "extends": [
       "react-app",
       "react-app/jest",
-      "plugin:cypress/recommended",
-      "next"
+      "plugin:cypress/recommended"
     ]
   },
   "babel": {