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>

migrations/users/bulk-email.js

@@ -16,6 +16,7 @@ async function updateUser (user) {
 
   if (count % progressCount === 0) {
     console.warn(`${count} ${user._id}`);
+    // eslint-disable-next-line no-promise-executor-return
     await new Promise(resolve => setTimeout(resolve, 5000));
   }