ruby:2.6 security, bug fix, and enhancement update

ruby 2.6.7-107 - Upgrade to Ruby 2.6.7. Resolves: rhbz1952627 - Resolv::DNS: timeouts if multiple IPv6 name servers are given an address containing leading zero Resolves: rhbz1954968 - Fix: Rubygem-bundler: Don't use insecure tmp directory as home allows for execution of malicious code. Resolves:...