Manifests: includes kdump subpackages in f40

Kdump split out into subpackages in rawhide a while back [1]
But this split was just pushed to F40 as well with [2].

Also include the subpackages for releases > 40

[1] 437dc2a
[2] https://bodhi.fedoraproject.org/updates/FEDORA-2024-d70dfd026e

manifests/fedora-coreos.yaml

@@ -33,7 +33,7 @@ conditional-include:
   - if: releasever == 39
     # Checks for breaking changes that came with Podman v5.
     include: podman-v5.yaml
-  - if: releasever >= 41
+  - if: releasever >= 40
     # Include makedumpfile and kdump-utils subpackages from kexec-tools (new in F41+)
     include: kdump.yaml
   # On <41, we want to keep making sure dnf doesn't slip in somehow