Pass requester base URL to integration (#2420)

[bluek1te]

Base URL was not passed into GithubIntegration leaving it to use the one defined in const. Fixes #2420.

[EnricoMi]

Excellent, thanks for picking this up!

Btw., is there a way to test this?

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

Oh wow, I've never seen that particular Github actions failure. @dblanchette what do you think, since you're rather familiar with that code?

[codecov-commenter]

Codecov Report

Base: 98.77% // Head: 98.77% // No change to project coverage 👍

Coverage data is based on head (bdceae2) compared to base (def5223).
Patch coverage: 100.00% of modified lines in pull request are covered.

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Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2425   +/-   ##
=======================================
  Coverage   98.77%   98.77%           
=======================================
  Files         117      117           
  Lines       11674    11674           
=======================================
  Hits        11531    11531           
  Misses        143      143           

Impacted Files	Coverage Δ
github/Requester.py	97.43% <100.00%> (ø)

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[bluek1te]

Looks like checks passed after I rebased the code

[EnricoMi]

LGTM!