Merge branch 'cb/use-freebsd-13-2-at-cirrus-ci'

Cirrus CI jobs started breaking because we specified version of
FreeBSD that is no longer available, which has been corrected.

* cb/use-freebsd-13-2-at-cirrus-ci:
  ci: update FreeBSD cirrus job

Author: gitster

.cirrus.yml

@@ -1,15 +1,15 @@
 env:
   CIRRUS_CLONE_DEPTH: 1
 
-freebsd_12_task:
+freebsd_task:
   env:
     GIT_PROVE_OPTS: "--timer --jobs 10"
     GIT_TEST_OPTS: "--no-chain-lint --no-bin-wrappers"
     MAKEFLAGS: "-j4"
     DEFAULT_TEST_TARGET: prove
     DEVELOPER: 1
   freebsd_instance:
-    image_family: freebsd-12-3
+    image_family: freebsd-13-2
     memory: 2G
   install_script:
     pkg install -y gettext gmake perl5