ci: Disable test-coreos

This job recently fell over, and surprisingly it wasn't the DPS
changes, it was ostreedev/ostree#3571
which stopped mounting `/boot` in the initramfs.

Our flow here does an install without a separate `/boot` partition
(which is not a normal FCOS path) and the combo of these things
breaks.

The real fix here will be cutting over this job to use coreos-assembler,
but it's a big lift.

Just disabling this job for now to unblock our CI - in practice
we do have coverage testing bootc with FCOS, just later.

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

Author: cgwalters

.github/workflows/ci.yml

@@ -311,6 +311,10 @@ jobs:
   # when run in the same job as test-integration).
   # Uses fedora-43 as it's the current stable Fedora release matching CoreOS.
   test-coreos:
+    # https://github.com/ostreedev/ostree/pull/3571 broke this because /boot
+    # without a separate /boot partition isn't mounted in the initramfs anymore.
+    # We need to change to use coreos-assembler.
+    if: false
     needs: package
     runs-on: ubuntu-24.04
 
@@ -387,7 +391,7 @@ jobs:
   # Sentinel job for required checks - configure this job name in repository settings
   required-checks:
     if: always()
-    needs: [cargo-deny, validate, package, test-integration, test-upgrade, test-coreos, test-container-export]
+    needs: [cargo-deny, validate, package, test-integration, test-upgrade, test-container-export]
     runs-on: ubuntu-latest
     steps:
       - run: exit 1
@@ -397,5 +401,4 @@ jobs:
           needs.package.result != 'success' ||
           needs.test-integration.result != 'success' ||
           needs.test-upgrade.result != 'success' ||
-          needs.test-coreos.result != 'success' ||
           needs.test-container-export.result != 'success'