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/user/stats/POST-user_allocate.test.js

@@ -36,7 +36,7 @@ describe('POST /user/allocate', () => {
   });
 
   it('returns an error if the user hasn\'t selected class', async () => {
-    await user.update({ 'flags.classSelected': false });
+    await user.updateOne({ 'flags.classSelected': false });
     await expect(user.post('/user/allocate'))
       .to.eventually.be.rejected.and.eql({
         code: 401,
@@ -46,7 +46,7 @@ describe('POST /user/allocate', () => {
   });
 
   it('allocates attribute points', async () => {
-    await user.update({ 'stats.points': 1 });
+    await user.updateOne({ 'stats.points': 1 });
     const res = await user.post('/user/allocate?stat=con');
     await user.sync();
     expect(user.stats.con).to.equal(1);