CI: Resync .cirrus.yml for FreeBSD testing

Includes:
  commit ebb7c6b2fa ("cirrus-ci: update to FreeBSD 14.1 image")
  commit 5ea7f2c9d7 ("CI: Update FreeBSD to 13.3")
  commit c2ce346647 ("CirrusCI: drop FreeBSD 12")

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>

.cirrus.yml

@@ -10,17 +10,18 @@ freebsd_template: &FREEBSD_TEMPLATE
                                  libxml2 glib git
 
   build_script:
+    - cc --version
     - ./configure --with-system-seabios=/usr/local/share/seabios/bios.bin
     - gmake -j`sysctl -n hw.ncpu` clang=y
 
 task:
-  name: 'FreeBSD 12'
+  name: 'FreeBSD 13'
   freebsd_instance:
-    image_family: freebsd-12-2
+    image_family: freebsd-13-3
   << : *FREEBSD_TEMPLATE
 
 task:
-  name: 'FreeBSD 13'
+  name: 'FreeBSD 14'
   freebsd_instance:
-    image_family: freebsd-13-0
+    image_family: freebsd-14-1
   << : *FREEBSD_TEMPLATE