update manifest.json

Author: bkelly16

manifest.json

@@ -40,11 +40,6 @@
             "os_name": "ubuntu-focal",
             "image": "ci.cr.45d.io/ci/simple/ubuntu-focal:1"
         },
-        {
-            "group": "debian",
-            "os_name": "debian-bookworm",
-            "image": "ci.cr.45d.io/ci/simple/ubuntu-jammy:1"
-        },
         {
             "group": "ubuntu",
             "os_name": "ubuntu-jammy",