Merge branch 'cb/ci-freebsd-13-4'

CI updates.

* cb/ci-freebsd-13-4:
  ci: update FreeBSD image to 13.4

Author: gitster

.cirrus.yml

@@ -9,7 +9,7 @@ freebsd_task:
     DEFAULT_TEST_TARGET: prove
     DEVELOPER: 1
   freebsd_instance:
-    image_family: freebsd-13-2
+    image_family: freebsd-13-4
     memory: 2G
   install_script:
     pkg install -y gettext gmake perl5