module/updateinfo: Disable failing test

After merging #1540, it was revealed that this test in module/updateinfo.feature wasn't actually testing anything, and the behavior it intends to test is (and has long been?) broken. The test was expecting an empty stdout (or <REPOSYNC>), which it was getting, but only after refactoring the tests did we notice the message on stderr:

Unknown argument "--list" for command "updateinfo".

For now, I've updated the test to call the correct command, `updateinfo
list`, and disabled the test since it is now failing (but in a more
valid way).

dnf-behave-tests/dnf/module/updateinfo.feature

@@ -53,14 +53,15 @@ Given I use repository "dnf-ci-fedora-modular-updates"
   And stdout is empty
 
 
-@dnf5
+# Test is failing with DNF 5.
+# @dnf5
 @bz1804234
 Scenario: having installed packages from one collection and enabled all modules from another doesn't activate advisory
 Given I use repository "dnf-ci-fedora"
   And I execute dnf with args "install nodejs"
   And I use repository "dnf-ci-fedora-modular-updates"
   And I execute dnf with args "module enable postgresql:9.6"
- When I execute dnf with args "updateinfo --list"
+ When I execute dnf with args "updateinfo list"
  Then stderr is
       """
       <REPOSYNC>