We have retired the following Varnish versions:

• managed-3.0.5
• quick-5.2.1
• 3.0.5-esi
• 4.1.5
• 4.1.6
• 4.1.7
• 5.0.0
• 5.1.1
• 5.2.0

There are newer Varnish versions available in these minor version series.