update FreeBSD image to latest 12.2
diff --git a/.cirrus.yml b/.cirrus.yml
index 8387ca1..fe17aac 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -2,7 +2,7 @@
   name: FreeBSD (shortest)
   freebsd_instance:
     matrix:
-      image_family: freebsd-12-1
+      image_family: freebsd-12-2
       # The stable 11.3 image causes "Agent is not responding" so use a snapshot
       image_family: freebsd-11-3-snap
   install_script: pkg install -y gmake coreutils