Update github client dependency

[s4nji]

What does this PR do?

Updates google/go-github to current latest version. Supersedes https://github.com/hellofresh/janus/pull/344.

Links

• https://github.com/google/go-github/blob/b1f138353a6287df5156971b3963e9107eca06a1/github/orgs_teams.go#L382
• https://github.com/google/go-github/blob/cc20b8df44a10cf7439649ec5a2192f06e97fe43/github/teams.go#L356

[codecov[bot]]

Codecov Report

Merging #410 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #410   +/-   ##
=======================================
  Coverage   40.48%   40.48%           
=======================================
  Files          76       76           
  Lines        2655     2655           
=======================================
  Hits         1075     1075           
  Misses       1517     1517           
  Partials       63       63

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[aleksandrzhiliaev]

+1