feat(integrations): Support gql 4.0-style execute

[sentrivana]

gql 4.0 changed the signature of the execute function which we were patching. Instead of a DocumentNode it now gets a GraphQLRequest (which contains the document attribute with the DocumentNode). This means we need to update the way we're extracting additional data in the event processor.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 84.66%. Comparing base (567a91a) to head (751a6c7).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4779      +/-   ##
==========================================
+ Coverage   84.61%   84.66%   +0.04%     
==========================================
  Files         158      158              
  Lines       16376    16383       +7     
  Branches     2809     2810       +1     
==========================================
+ Hits        13857    13871      +14     
+ Misses       1693     1687       -6     
+ Partials      826      825       -1     

Files with missing lines	Coverage Δ
sentry_sdk/integrations/gql.py	84.81% <100.00%> (-1.31%)	⬇️

... and 3 files with indirect coverage changes