chore: Bump version of go-github to v88.0.0

[gmlewis]

This release contains the following breaking API changes:

• refactor!: Change app installation Find* methods to Get* #4243
  BREAKING CHANGE: App installation methods are renamed from Find* to Get*.

...and the following additional changes:

• chore: Update openapi_operations.yaml #4242
• feat: Add support for setting client URLs #4240
• refactor: Add constants for API versions #4236
• docs: Formatting and punctuation changes #4235
• feat: Add GetParentIssue for sub-issues #4232
• chore: Bump go-github from v86 to v87 in /scrape #4234

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.46%. Comparing base (c7788f9) to head (045d30b).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4245   +/-   ##
=======================================
  Coverage   97.46%   97.46%           
=======================================
  Files         190      190           
  Lines       19178    19178           
=======================================
  Hits        18691    18691           
  Misses        270      270           
  Partials      217      217           

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