Bump ruby from 2.4.3 to 2.6.1
Bump ruby from 2.4.3 to 2.6.1

Bumps ruby from 2.4.3 to 2.6.1.

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
minimum2scp/docker-gemstash,minimum2scp/docker-gemstash