To be sure of getting updates to the WSL2 kernel:

• Open Settings > Update & recovery > Windows Update
• Click on "Advanced options"
• Enable "Receive updates for other Microsoft products when you update Windows"
• Returning to the previous page in Settings, click "Check for updates".

This will allow Windows to install the latest Linux 2 kernel for WSL 2.

The presence of a later version on Github does not mean that it was yet incorporated into the Stable version.

To be sure of getting updates to the WSL2 kernel:

• Windows 10 : Open Settings > Update & Security > Windows Update.
  Windows 11 : Open Settings > Windows Update.
• Click on "Advanced options"
• Enable "Receive updates for other Microsoft products when you update Windows"
• Returning to the previous page in Settings, click "Check for updates".

This will allow Windows to install the latest Linux 2 kernel for WSL 2.

The presence of a later version on Github does not mean that it was yet incorporated into the Stable version.