ms-configure 'unary operator expected' line 1077 #709

I've been trying to get my aging mailscanner up to date (including OS) and I ran into some issues with the ms-configure script.
Due to the OS upgrade a bunch of perl packages were removed.
When running ms-configure --update the script will error on checking missing perl packages and not actually install them from cpan.
Specifying --installCPAN=Y does not work (ms-configure --update --installCPAN=Y
From what I can tell from reading the script is that it is SUPPOSED to enable 'cpan install' when just doing --update
It is just failing to set the CPANOPTION variable to 1.
I just manually put CPANOPTION=1 above line 1077 somewhere as a dirty workaround but it might be nice to have a proper fix.

Server (please complete the following information):

• OS: Almalinux 9 (The new CentOS kinda)
• Mandatory Access Control Enforcement: none
• MailScanner Version: 5.5.3-2
• OS Version: 9.6
• Installation method: RPM from github.
• Installation: Upgrade
• Containerized: No

Additional context
This is a #yolo upgrade from CentOS 7 to AlmaLinux 9 (Via 8, yes I know, I should have done this ages ago)
As of writing this I'm not sure if it'll actually work, ms-config is still busy with all the dependencies but it seems to be doing alright.