Overwrite pull_request_target pr number

[thomasrockhu]

Fixes #155

This PR addresses the issue with pull_request_target events and Codecov pulling the wrong PR number. The Action will now force the value to the bash uploader.

[codecov]

Codecov Report

Merging #264 (d9a1bbc) into master (fcebab0) will increase coverage by 0.04%.
The diff coverage is 50.00%.

@@            Coverage Diff             @@
##           master     #264      +/-   ##
==========================================
+ Coverage   97.10%   97.14%   +0.04%     
==========================================
  Files           3        3              
  Lines         138      140       +2     
  Branches       42       43       +1     
==========================================
+ Hits          134      136       +2     
  Misses          4        4              

Flag	Coverage Δ
demo	87.50% <ø> (ø)
script	98.38% <50.00%> (+0.02%)	⬆️

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Impacted Files	Coverage Δ
src/buildExec.ts	98.38% <50.00%> (+0.02%)	⬆️

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