Bump version of go-github library

[gmlewis]

This PR is in preparation for release v37.0.0.

This release contains the following breaking API changes:

• define struct types instead of using anonymous structs #1900
• Modify GetBranch to handle redirects #1901
• Fix Code Scanning Alert tool field #1904

and the following additional changes:

• Parse 'reviewed' event object 'state' property #1886
• Add auto_merge field in PullRequest struct #1896
• Repository Vulnerability Alert Add Missing Fields #1898
• Enable Client.RateLimits to bypass the rate limit check #1907
• Handle MIME parameters in Content-Type Header #1922
• Add RequiredConversationResolution protection field #1946
• Repository Object - Deprecated Fields #1952

plus the following test-only changes:

• Add test cases for JSON resource marshaling #1902
• Add test cases for JSON resource marshaling #1906
• Add test cases for JSON resource marshaling #1908
• Add test cases for JSON resource marshaling #1909
• Add test cases for JSON resource marshaling #1912
• Add test cases for JSON resource marshaling #1913
• Add test cases for JSON resource marshaling #1914
• Add test cases for JSON resource marshaling #1915
• Add test cases for JSON resource marshaling #1917
• Add test cases for JSON resource marshaling #1918
• Add test cases for JSON resource marshaling #1919
• Add test cases for JSON resource marshaling #1923
• Add test cases for JSON resource marshaling #1924
• Add test cases for JSON resource marshaling #1925
• Add test cases for JSON resource marshaling #1926
• Add test cases for JSON resource marshaling #1927
• Add test cases for JSON resource marshaling #1928
• Add test cases for JSON resource marshaling #1929
• Add test cases for JSON resource marshaling #1930
• Add test cases for JSON resource marshaling #1937
• Add test cases for JSON resource marshaling #1938
• Add test for JSON marshaling for Teams #1941
• Add test cases for JSON resource marshaling #1951

[codecov]

Codecov Report

Merging #1957 (facce66) into master (a7a3d8c) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1957   +/-   ##
=======================================
  Coverage   97.84%   97.84%           
=======================================
  Files         105      105           
  Lines        6809     6809           
=======================================
  Hits         6662     6662           
  Misses         80       80           
  Partials       67       67           

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[Parker77]

LGTM.