fix: pull request CI base commit

[scolladon]

And merging work when possible

What does this pull request contains

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• Added for new features.
• Changed for changes in existing functionality.
• Deprecated for soon-to-be removed features.
• Removed for now removed features.
• Fixed for any bug fixes.
• Security in case of vulnerabilities.

Explain your changes

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Use pull_request instead of pull_request_base
Issue is pull_request_base checkout the base branch which is not what we want to do.
In order to not have issue with external check using our credential those steps are not done from fork

[codecov]

Codecov Report

Merging #253 (399c2d0) into main (ecd146f) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #253   +/-   ##
=======================================
  Coverage   98.63%   98.63%           
=======================================
  Files          22       22           
  Lines         585      585           
=======================================
  Hits          577      577           
  Misses          8        8           

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[codeclimate]

Code Climate has analyzed commit 399c2d0 and detected 0 issues on this pull request.

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