Update the keys in the installation instructions (linux packages).
Fixes https://github.com/scylladb/scylladb/issues/28330
Closes scylladb/scylladb#28357
(cherry picked from commit edc291961b)
Closes scylladb/scylladb#28370
Update the keys in the installation instructions (linux packages).
Fixes https://github.com/scylladb/scylladb/issues/28330
Closes scylladb/scylladb#28357
(cherry picked from commit edc291961b)
Closes scylladb/scylladb#28370