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

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

test/api/v3/integration/user/GET-user_anonymized.test.js

@@ -17,7 +17,7 @@ describe('GET /user/anonymized', () => {
         text: 'Clark Kent',
       },
     });
-    await user.update({
+    await user.updateOne({
       newMessages: ['some', 'new', 'messages'],
       'profile.name': 'profile',
       'purchased.plan': 'purchased plan',