Update perl versions as per current state

As is correctly pointed out in os-autoinst#11561, we have version 5.26 installed on
the production instances and perl 5.32 is available in Factory.

.github/workflows/static.yml

@@ -10,11 +10,11 @@ jobs:
       matrix:
         include:
           - test: static
-            perl-version: 5.26
+            perl-version: 5.32
           - test: unit
-            perl-version: 5.26
+            perl-version: 5.32
           - test: compile
-            perl-version: 5.18
+            perl-version: 5.26
     container:
       image: perldocker/perl-tester:${{ matrix.perl-version }}
     steps: