[13.0][FIX] hr_attendance_rfid: Handle ValidationError properly

[lubusax]

A ValidationError has to be converted to a string explicitly, otherwise an error is produced if is used as a string.

[AaronHForgeFlow]

@lubusax please do not consider codecov warning, it is priority to keep branches even

[github-actions]

There hasn't been any activity on this pull request in the past 4 months, so it has been marked as stale and it will be closed automatically if no further activity occurs in the next 30 days.
If you want this PR to never become stale, please ask a PSC member to apply the "no stale" label.

[AaronHForgeFlow]

ping @OCA/human-resources-maintainers

[pedrobaeza]

Instead of str(e), I think it should be repr(e).

[AaronHForgeFlow]

ok to me to use repr(e)

[OCA-git-bot]

This PR has the approved label and has been created more than 5 days ago. It should therefore be ready to merge by a maintainer (or a PSC member if the concerned addon has no declared maintainer). 🤖

[AaronHForgeFlow]

@lubusax I think the change won't affect how you handle the error message in the RFID device. Do you agree? I can supersede the PR if you want.

[lubusax]

@AaronHForgeFlow please supersede :) Let's get this done. Thank you

[github-actions]

There hasn't been any activity on this pull request in the past 4 months, so it has been marked as stale and it will be closed automatically if no further activity occurs in the next 30 days.
If you want this PR to never become stale, please ask a PSC member to apply the "no stale" label.