devel/qt5-scripttools: unbreak after 020693c166d1

Project MESSAGE: perl -w /usr/local/lib/qt5/bin/syncqt.pl -module QtScript -version 5.15.11 -outdir /wrkdirs/usr/ports/devel/qt5-scripttools/work/kde-qtscript-5.15.11p0 -builddir /wrkdirs/usr/ports/devel/qt5-scripttools/work/kde-qtscript-5.15.11p0 /wrkdirs/usr/ports/devel/qt5-scripttools/work/kde-qtscript-5.15.11p0
sh: perl: not found

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