patch 9.0.1024: CI doesn't use the latest FreeBSD version

Problem:    CI doesn't use the latest FreeBSD version.
Solution:   Go from 12.3 to 12.4. (closes #11423)

.cirrus.yml

@@ -8,9 +8,9 @@ freebsd_task:
     - name: FreeBSD 13.1
       freebsd_instance:
         image_family: freebsd-13-1
-    - name: FreeBSD 12.3
+    - name: FreeBSD 12.4
       freebsd_instance:
-        image_family: freebsd-12-3
+        image_family: freebsd-12-4
   timeout_in: 20m
   install_script:
     - pkg update -f

src/version.c

@@ -695,6 +695,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1024,
 /**/
     1023,
 /**/