Use a colon as the version separator in update_system_workers

Closes #1886 (closed)

changed milestone to %Arkindex 1.7.1

requested review from @babadie

assigned to @erouchet

added 2 commits

• defb7679 - 1 commit from branch release-1.7.1
• 7cfc9c51 - Use a colon as the version separator in update_system_workers

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enabled an automatic merge when all merge checks for 7cfc9c51 pass

merged