Running my WSL2 on Ubuntu 22.04 Jammy Jellyfish, and wanted to update to 24.04 Noble Numbat.

• Make sure we’re up to date
  sudo apt update && sudo apt full-upgrade
• Close terminal, quit Docker Desktop
• In PowerShell:
  wsl -l -v (make sure we know what our Linux is called, probably Ubuntu)
  wsl --terminate Ubuntu (took a few tries / waiting a bit, make sure it says stopped)
• Open a terminal, which will restart Ubuntu
  sudo vim /etc/update-manager/release-upgrades (make sure it’s set to normal here until Noble LTS is out, in which case it should be lts)
• sudo do-release-upgrade . This takes a long time.
• Make sure to “reboot” your Ubuntu after this.
• Now go into the /etc/apt/sources.list.d directory and update all your sources here. Usually this involves changing the version numbers and release names in various places (e.g. 22.04 to 24.04 and jammy to noble)
• sudo apt update && sudo apt upgrade to catch your 3rd party repository updates.