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/challenges/POST-challenges.test.js

@@ -79,7 +79,7 @@ describe('POST /challenges', () => {
       });
 
       groupLeader = await populatedGroup.groupLeader.sync();
-      await groupLeader.update({ permissions: {} });
+      await groupLeader.updateOne({ permissions: {} });
       group = populatedGroup.group;
       groupMember = populatedGroup.members[0]; // eslint-disable-line prefer-destructuring
     });
@@ -177,7 +177,7 @@ describe('POST /challenges', () => {
       const oldUserBalance = groupLeader.balance;
       const prize = 8;
 
-      await group.update({ balance: 0 });
+      await group.updateOne({ balance: 0 });
       await groupLeader.post('/challenges', {
         group: group._id,
         name: 'Test Challenge',
@@ -202,7 +202,7 @@ describe('POST /challenges', () => {
     });
 
     it('sets challenge as official if created by admin and official flag is set', async () => {
-      await groupLeader.update({
+      await groupLeader.updateOne({
         permissions: {
           challengeAdmin: true,
         },