hydra: services: Add cuirass spec for skribilo.

* hydra/modules/sysadmin/services.scm (cuirass-specs): Add skribilo
spec.

hydra/modules/sysadmin/services.scm

@@ -429,6 +429,23 @@ collection instead."
       (priority 5)
       (systems '#$systems))
 
+     (specification
+      (name 'skribilo)
+      (build '(channels skribilo))
+      (channels
+       (list (channel
+              (name 'skribilo)
+              (url "https://git.savannah.gnu.org/git/skribilo.git")
+              (branch "master")
+              (introduction
+               (make-channel-introduction
+                "adc9aa9600e27e68b48fa8d1477b9f448f0e3490"
+                (openpgp-fingerprint
+                 "7F73 0343 F2F0 9F3C 77BF  79D3 2E25 EE8B 6180 2BB3"))))
+             %default-guix-channel))
+      (priority 5)
+      (systems '#$systems))
+
      (specification
       (name 'cuirass)
       (build '(channels cuirass))