perl-PerlIO-utf8_strict from Publishing:TeXLive project
Select Your Operating System
Add repository and install manually
For openSUSE Tumbleweed run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Publishing:TeXLive/openSUSE_Tumbleweed/Publishing:TeXLive.repo zypper refresh zypper install perl-PerlIO-utf8_strict
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/Publishing:TeXLive/15.6/Publishing:TeXLive.repo zypper refresh zypper install perl-PerlIO-utf8_strict