infra: fix preflight comment for external contributors

[ST-DDT]

This PR fixes the preflight comments for external contributors.

PRs that are created from third party repositories are run with read only permissions, thus the CI run is unable to post the comment to the PR.

There are two solutions to that issue:

1. Use the pull request target event
2. Run a secondary CI step with increased permissions

The pull_request_target event based CI pipeline is considered dangerous if it uses the checked out code and since the pipeline actually uses the PRs code in order to determine whether it is complete or not, this is not an option.
So this PR uses the second option and runs an independent CI step using the code from next to run the script to update the comment.

Example

• PR: test ST-DDT/faker#21
• Check-Action: https://github.com/ST-DDT/faker/actions/runs/10255812338/job/28373547559
• Comment-Action: https://github.com/ST-DDT/faker/actions/runs/10255829985/job/28373604237
• PR-Comment: test ST-DDT/faker#21 (comment)
  

I hope that I tested this sufficiently and this isn't just a flawed test setup.
It would be good, if you could test this by creating a PR with preflight diffs against ST-DDT/faker:next (optimally by using your own forks of faker instead of from the main repo)

• ST-DDT/faker@0f10028 (#21)

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.97%. Comparing base (1e9d65b) to head (1103d00).
Report is 1 commits behind head on next.

Additional details and impacted files

@@           Coverage Diff           @@
##             next    #3038   +/-   ##
=======================================
  Coverage   99.96%   99.97%           
=======================================
  Files        2772     2772           
  Lines      226173   226173           
  Branches      944      942    -2     
=======================================
+ Hits       226095   226108   +13     
+ Misses         78       65   -13     

see 2 files with indirect coverage changes

[Shinigami92]

as with your other PR, please first adjust the PR title to something matching with the history

[ST-DDT]

as with your other PR, please first adjust the PR title to something matching with the history

Done

[xDivisionByZerox]

The current PR desciption doesn't provide information why the setup did not work previously. I can follow the steps done in the PR, but can't confirm for myself why this fixes the problem. Could you be so kind to give a short explanation in the PR description, please.

[ST-DDT]

The current PR desciption doesn't provide information why the setup did not work previously. I can follow the steps done in the PR, but can't confirm for myself why this fixes the problem. Could you be so kind to give a short explanation in the PR description, please.

Sure, will add it when I'm back.
TLDR: External PRs dont have any permissions (to comment on the PR).

[xDivisionByZerox]

FYI: I tested this implementation against @ST-DDT's fork and it worked as expected.

[ST-DDT]

Ready for review