Bump jruby from 9.4.7.0-jdk11 to 9.4.8.0-jdk11 in /docker#158

dependabot[bot] wants to merge 1 commit intomainpuppetlabs/vmpooler-deployment:mainfrom

dependabot/docker/docker/jruby-9.4.8.0-jdk11puppetlabs/vmpooler-deployment:dependabot/docker/docker/jruby-9.4.8.0-jdk11Copy head branch name to clipboard