Update dependency mongoose to v7

Author: renovate[bot]

package.json

@@ -19,7 +19,7 @@
     "is-url": "1.2.4",
     "module-alias": "2.2.2",
     "moment": "2.29.4",
-    "mongoose": "6.9.2",
+    "mongoose": "7.0.0",
     "node-fetch": "2.6.9",
     "passport": "^0.6.0",
     "passport-discord": "0.1.4",