Bump logback-core from 1.2.0 to 1.2.9 in /gearman-common#33

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dependabot/maven/gearman-common/ch.qos.logback-logback-core-1.2.9johnewart/gearman-java:dependabot/maven/gearman-common/ch.qos.logback-logback-core-1.2.9Copy head branch name to clipboard