Upgrade to mongoose 7 (#14971)

* remove some unused dependencies

* update mongoose version

* make common tests pass

* Make unit tests pass

* make api v3 integration tests pass

* fix lint issues

* fix issue with package-lock

* fix(lint): we don't need no .js

* fix(lint): update to latest config-habitrpg

* chore(npm): update package locks

* fix(test): replace deprecated fn

* chore(package): update eslint-habitrpg again

* fix(lint): server linting

* fix(lint): client linting

* fix(client): correct mangled common imports

* chore(npm): update package-locks

* fix(lint): punctuation, module

---------

Co-authored-by: SabreCat <sabrecat@gmail.com>
Co-authored-by: SabreCat <sabe@habitica.com>

test/api/v3/integration/chat/DELETE-chat_id.test.js

@@ -28,7 +28,7 @@ describe('DELETE /groups/:groupId/chat/:chatId', () => {
     message = message.message;
     userThatDidNotCreateChat = members[0]; // eslint-disable-line prefer-destructuring
     admin = members[1]; // eslint-disable-line prefer-destructuring
-    await admin.update({ permissions: { moderator: true } });
+    await admin.updateOne({ permissions: { moderator: true } });
   });
 
   context('Chat errors', () => {