test: regenerate manifests

Regenerate manifests with the added RHSM fact.
RHEL 9 manifests haven't changed because the stage is missing in the OS
pipeline (bug).

test/data/manifests/rhel_8-x86_64-openstack-boot.json

@@ -2293,6 +2293,14 @@
               }
             }
           },
+          {
+            "type": "org.osbuild.rhsm.facts",
+            "options": {
+              "facts": {
+                "image-builder.osbuild-composer.api-type": "test-manifest"
+              }
+            }
+          },
           {
             "type": "org.osbuild.selinux",
             "options": {