CI: cirrus-ci: bump FreeBSD image to 13-1

we use FreeBSD binary packages that we rebuilt for FreeBSD-13.1

Newer FreeBSD version for package zstd:
To ignore this error set IGNORE_OSVERSION=yes
- package: 1301000
- running kernel: 1300139

.cirrus.yml

@@ -1,7 +1,7 @@
 FreeBSD_task:
   freebsd_instance:
     matrix:
-      image_family: freebsd-13-0
+      image_family: freebsd-13-1
   only_if: $CIRRUS_BRANCH =~ 'master|next'
   install_script:
     - pkg update -f && pkg upgrade -y && pkg install -y openssl git gmake lua53 socat pcre