DNM: Only test c10s

Signed-off-by: Colin Walters <walters@verbum.org>

Author: cgwalters

.github/workflows/ci.yml

@@ -152,7 +152,8 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        test_os: [fedora-42, fedora-43, fedora-44, centos-9, centos-10]
+        # test_os: [fedora-42, fedora-43, fedora-44, centos-9, centos-10]
+        test_os: [centos-10]
         variant: [ostree, composefs-sealeduki-sdboot]
         exclude:
           # centos-9 UKI is experimental/broken (https://github.com/bootc-dev/bootc/issues/1812)