This commit adds the OS support for version 6.2.
In addition, it removes support for 6.0, as the policy is only to include
information for the supported versions, i.e., the two latest versions.
Fixes https://github.com/scylladb/scylladb/issues/20804
(cherry picked from commit 8145109120)
Closes scylladb/scylladb#20825