/usr/share/perl5/ is in libical-parser-html-perl 1.07-4.
This file is owned by root:root, with mode 0o755.
..
/usr/share/perl5/iCal/
/usr/share/perl5/iCal/Parser/
/usr/share/perl5/iCal/Parser/HTML/
/usr/share/perl5/iCal/Parser/HTML/stylesheet/
/usr/share/perl5/iCal/Parser/HTML/stylesheet/cal-util.xsl
/usr/share/perl5/iCal/Parser/HTML/stylesheet/index.xsl
/usr/share/perl5/iCal/Parser/HTML/stylesheet/month-util.xsl
/usr/share/perl5/iCal/Parser/HTML/stylesheet/day.xsl
/usr/share/perl5/iCal/Parser/HTML/stylesheet/month.xsl
/usr/share/perl5/iCal/Parser/HTML/stylesheet/week.xsl
/usr/share/perl5/iCal/Parser/HTML/stylesheet/day-util.xsl
/usr/share/perl5/iCal/Parser/HTML/stylesheet/year.xsl
/usr/share/perl5/iCal/Parser/HTML.pm