There's a closed pull request on the void-packages repository

checkbashism: add notice to only bump version if necessary
https://github.com/void-linux/void-packages/pull/15736

Description:
Most of changes in Debian devscript is not relevant to the checkbashism.

The last change to checkbashism.pl was v2.19.6, and it was only code
formatting change.

The last meaningful changes to checkbashism.pl was v2.11.7, and it's
from 2012.

Add this notice so people won't make useless version bump to this script