Update dependency nuxt to v3 [SECURITY]

Author: renovate[bot]

package.json

@@ -65,7 +65,7 @@
 		"express": "^4.17.1",
 		"jsonfile": "^6.0.1",
 		"node-sass": "^6.0.0",
-		"nuxt": "^2.15.4",
+		"nuxt": "^3.0.0",
 		"nuxt-buefy": "^0.4.7",
 		"sass-loader": "^11.0.1"
 	},