homebrew_cask: fix false failure on upgrade of latest-versioned casks (#11838)

* homebrew_cask: fix false failure on upgrade of latest-versioned casks

Use rc == 0 to determine upgrade success, consistent with _upgrade_all().
The previous check (_current_cask_is_installed() and not _current_cask_is_outdated())
was unreliable: for `latest`-versioned casks under --greedy, brew may still
list the cask as outdated after a successful upgrade, causing the task to fail
with a harmless warning from stderr as the error message.

Fixes #1647

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* homebrew_cask: add changelog fragment for #11838

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

* Fix changelog fragment

---------

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

changelogs/fragments/11838-homebrew-cask-upgrade-latest.yml

@@ -0,0 +1,6 @@
+bugfixes:
+  - homebrew_cask - fix false task failure when upgrading casks with ``version=latest``;
+    the post-upgrade check incorrectly re-ran ``brew outdated`` (which always lists ``latest``
+    casks as outdated under ``--greedy``), now uses the command exit code instead
+    (https://github.com/ansible-collections/community.general/issues/1647,
+    https://github.com/ansible-collections/community.general/pull/11838).

plugins/modules/homebrew_cask.py

@@ -656,7 +656,7 @@ class HomebrewCask:
         else:
             rc, out, err = self.module.run_command(cmd)
 
-        if self._current_cask_is_installed() and not self._current_cask_is_outdated():
+        if rc == 0:
             self.changed_count += 1
             self.changed = True
             self.message = f"Cask upgraded: {self.current_cask}"