I can't find the Perl module Image::Magick
anywhere.
It is gone from CPAN.
My guess is that it's an indexing error on MetaCPAN. - this is wrong, see my update below
You can see various versions of the distribution (which seems to have been renamed from PerlMagick to Image::Magick in 2021) on CPAN here.
Update: The MetaCPAN advice on missing modules suggests looking to see if the module is in 02packages.details.txt - which it isn't. So the next step is to contact the author to see if they know anything. Maybe start by raising a ticket in RT.
Update 2: I started a conversation about this on the Perl Community FB group, which led to a discussion on #p5p on IRC. We seem to be reaching a consensus that it was some kind of PAUSE error (probably on the upload of the most recent version).
14:33 < rjbs> This sounds like some kind of nasty transactionality failure
Update 3: Another release seems to have fixed the problem. It's there now: