Added Comment line above checksum section to add clarification about...

Added Comment line above checksum section to add clarification about Kubespray's version support and testing (#6785)

roles/download/defaults/main.yml

@@ -117,7 +117,8 @@ crictl_checksums:
     v1.18.0: 876dd2b3d0d1c2590371f940fb1bf1fbd5f15aebfbe456703ee465d959700f4a
     v1.17.0: 7b72073797f638f099ed19550d52e9b9067672523fc51b746e65d7aa0bafa414
 
-# Checksums
+# Checksum
+# Kubernetes versions above Kubespray's current target version are untested and should be used with caution.
 kubelet_checksums:
   arm:
     v1.19.2: 631e686c34911a40a798817dcff89532c88bb649885f93ec66b339e227ebd974