Fix username GH changes and email save new users

[octavioamu]

Description

Bugs this try to solve:
There is a bug with new users sync_profile not saving the email on profile obj
If someone change the username on gh data just get in sync the second time the user logins

Now users can change GH username and when login this will update username, and profile
Force to save user emails on profile

TODO: fix sync_profile to save the data the first login

Refers/Fixes

fix https://sentry.io/organizations/gitcoin/issues/1278683144/events/?project=1398424&referrer=slack

Testing

Tested with New user
Tested with a user changing GH username.

[codecov]

Codecov Report

Merging #5335 into master will increase coverage by 0.2%.
The diff coverage is 19.23%.

@@            Coverage Diff            @@
##           master    #5335     +/-   ##
=========================================
+ Coverage   29.81%   30.02%   +0.2%     
=========================================
  Files         236      236             
  Lines       19884    21144   +1260     
  Branches     2838     3267    +429     
=========================================
+ Hits         5929     6349    +420     
- Misses      13711    14505    +794     
- Partials      244      290     +46

Impacted Files	Coverage Δ
app/app/utils.py	21.9% <0%> (-1.32%)	⬇️
app/git/utils.py	41.5% <55.55%> (-0.28%)	⬇️
app/quests/views.py	19.76% <0%> (-5.02%)	⬇️
app/app/urls.py	86.53% <0%> (-3.05%)	⬇️
app/dashboard/views.py	13.3% <0%> (+0.35%)	⬆️
app/dashboard/models.py	50.93% <0%> (+0.48%)	⬆️
app/avatar/models.py	36.55% <0%> (+1.83%)	⬆️
app/quests/helpers.py	23.48% <0%> (+1.99%)	⬆️
app/quests/models.py	50% <0%> (+2.25%)	⬆️
app/kudos/models.py	58.25% <0%> (+4.6%)	⬆️

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