x11-toolkits/qt5-gamepad: unbreak after 020693c1

Project MESSAGE: perl -w /usr/local/lib/qt5/bin/syncqt.pl -module QtGamepad -version 5.15.8 -outdir /wrkdirs/usr/ports/x11-toolkits/qt5-gamepad/work/kde-qtgamepad-5.15.8p0 -builddir /wrkdirs/usr/ports/x11-toolkits/qt5-gamepad/work/kde-qtgamepad-5.15.8p0 /wrkdirs/usr/ports/x11-toolkits/qt5-gamepad/work/kde-qtgamepad-5.15.8p0
sh: perl: not found

PR:		266007
Reported by:	antoine (via exp-run)