Update Ruby version and add latest libmagic version (5.30).
Update Ruby version and add latest libmagic version (5.30).

Signed-off-by: Krzysztof Wilczynski <5f1c0be89013f8fde969a8dcb2fa1d522e94ee00@linux.com>

kwilczynski/ruby-magic,kwilczynski/ruby-magic