Upgrade Kyverno to 1.12.x / chart 3.2.x

This is an umbrella issue to keep track of the need to:

• upgrade Kyverno chart to version 3.2 (!2204 (merged))
• do improvements that Kyverno 1.12 allows:
  • !2144 (merged)
• do cleanups that chart version 3.2 allows:
  • !2549 (comment 1983436060)