Role fails on RHEL 8.3

[AlanSSKim]

I cloned and executed the last code in the repo here, but it still fails as shown below.

TASK [nvidia.enroot : enroot rpm packages] *****************************************************************************************************************
failed: [agpu3] (item=['https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot-3.2.0-1.el7.x86_64.rpm', 'https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot+caps-3.2.0-1.el7.x86_64.rpm']) => changed=false 
  ansible_loop_var: item
  item:
  - https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot-3.2.0-1.el7.x86_64.rpm
  - https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot+caps-3.2.0-1.el7.x86_64.rpm
  msg: Failed to validate GPG signature for enroot-3.2.0-1.el7.x86_64
failed: [agpu2] (item=['https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot-3.2.0-1.el7.x86_64.rpm', 'https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot+caps-3.2.0-1.el7.x86_64.rpm']) => changed=false 
  ansible_loop_var: item
  item:
  - https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot-3.2.0-1.el7.x86_64.rpm
  - https://github.com/NVIDIA/enroot/releases/download/v3.2.0/enroot+caps-3.2.0-1.el7.x86_64.rpm
  msg: Failed to validate GPG signature for enroot-3.2.0-1.el7.x86_64

OS is RHEL 8.3

Red Hat Enterprise Linux release 8.3 (Ootpa)