Revert "bump sidekiq"

This reverts commit 9307a1aaeb2825bd025b46c25fc4c3d61b6d7954.
Revert "Do not pass AR objects to Sidekiq"

This reverts commit 32935be9b1f85e0e879883897fb3c7b7dffea7ca.
Merge branch 'develop' into social.mrzyx.de