ci: Use fedora:latest instead of pinned fedora:41

Track the latest stable Fedora release rather than a pinned version.

Assisted-by: OpenCode (Claude claude-opus-4-6)
Signed-off-by: Colin Walters <walters@verbum.org>

Author: cgwalters

.github/workflows/ci.yml

@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-24.04
     timeout-minutes: 5
     container:
-      image: quay.io/fedora/fedora:41
+      image: quay.io/fedora/fedora:latest
       options: "--privileged --pid=host -v /var/tmp:/var/tmp --tmpfs /tmp:rw,exec,nosuid,nodev -v /:/run/host"
 
     steps: