HCL Notes/Domino 12.0.1 Fix Pack 1 (FP1) was released April 8th, 2022 and is recommended to all customers. If you are running 12.0.1.x, apply this Fix Pack on top. Check Flexnet and go through the detailed Fix List.
Fix List: LINK
HCL Support Article: LINK
Domino 12.0.1 FP1 System Requirements
Notes 12.0.1 FP1 System Requirements