Add Missing Changes Field to Member Event Type.

[tayosec]

Fixes: #3154.

The member webhook event as described by github documentation contains a changes object. https://docs.github.com/en/webhooks/webhook-events-and-payloads?actionType=edited#member

However, the struct that defines the Member webhook event type is missing the changes object . This PR adds the missing changes object to the MemberEvent type.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.88%. Comparing base (2b8c7fa) to head (c190d6b).
Report is 43 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3153      +/-   ##
==========================================
- Coverage   97.72%   92.88%   -4.84%     
==========================================
  Files         153      170      +17     
  Lines       13390    11426    -1964     
==========================================
- Hits        13085    10613    -2472     
- Misses        215      723     +508     
  Partials       90       90              

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[gmlewis]

Thank you, @tayosec !
LGTM.
Merging.