(CAT-2101) Add support for Debian-12

Author: skyamgarp

.fixtures.yml

@@ -8,7 +8,7 @@ fixtures:
     facts: 'https://github.com/puppetlabs/puppetlabs-facts.git'
     puppet_agent:
       repo: 'https://github.com/puppetlabs/puppetlabs-puppet_agent.git'
-      ref: v4.13.0
+      ref: v4.21.0
     provision: 'https://github.com/puppetlabs/provision.git'
     yumrepo_core: 
       repo: https://github.com/puppetlabs/puppetlabs-yumrepo_core.git

metadata.json

@@ -45,7 +45,8 @@
       "operatingsystem": "Debian",
       "operatingsystemrelease": [
         "10",
-        "11"
+        "11",
+        "12"
       ]
     },
     {