Pass a required parameter (headers) to GithubException constructor.

[akhilg]

No description provided.

[codecov-commenter]

Codecov Report

Merging #2068 (e3e43ca) into master (83d6e07) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2068   +/-   ##
=======================================
  Coverage   98.86%   98.86%           
=======================================
  Files         108      108           
  Lines       11065    11065           
=======================================
  Hits        10939    10939           
  Misses        126      126           

Impacted Files	Coverage Δ
github/MainClass.py	95.25% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 83d6e07...e3e43ca. Read the comment docs.

[s-t-e-v-e-n-k]

#2079 looks to cover this better, thanks for your contribution.