See the core module Module::Load (there are others, like Module::Runtime, but this one is core), plus the \&{'subname'} symbolic reference syntax which is allowed even under strict. However, if $name is user input, this is still a security risk!

use warnings;
use strict;
use Module::Load qw/load/;

my $name = 'SomeModule';
load $name;
(\&{$name.'::somesub'})->();
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