Update all of nextjs to version 12.3.0

Author: depfu[bot]

package.json

@@ -21,7 +21,7 @@
     "contentful": "^9.1.34",
     "cookie": "^0.5.0",
     "js-cookie": "^3.0.1",
-    "next": "11.1.2",
+    "next": "12.3.0",
     "postcss-easy-import": "^4.0.0",
     "postcss-loader": "^7.0.0",
     "react": "17.0.2",
@@ -31,7 +31,7 @@
   },
   "devDependencies": {
     "eslint": "7.32.0",
-    "eslint-config-next": "11.1.2",
+    "eslint-config-next": "12.3.0",
     "eslint-import-resolver-babel-module": "^5.3.1",
     "eslint-plugin-import": "^2.26.0",
     "sass": "^1.52.1"