Bug 34303: Only perlcritic files from git repo

Bug 34303: Only perlcritic files from git repo

Test plan:
Run t/00-testcritic.t

Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
JD amended patch: tidy

Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>
(cherry picked from commit 2bc251cfdd1efdf6d0f7f299838ff067744ff17b)
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit 835bc43d316df60882c09fb201caa75e027af0a3)
Signed-off-by: Matt Blenkinsop <matt.blenkinsop@ptfs-europe.com>