It is giving the following error
The following signatures couldn't be verified because the public key is not available: NO_PUBKEY xxxxxxxxxxxxxx
Get:4 https://packages.microsoft.com/repos/ms-teams stable InRelease [5,931 B]
Hit:12 https://ppa.launchpadcontent.net/tomtomtom/woeusb/ubuntu jammy InRelease
Hit:13 https://ppa.launchpadcontent.net/ubuntuhandbook1/gimp/ubuntu jammy InRelease
Reading package lists... Done
W: GPG error: https://dl.winehq.org/wine-builds/ubuntu jammy InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY xxxxxxxx
E: The repository 'https://dl.winehq.org/wine-builds/ubuntu jammy InRelease' is not signed.
N: Updating from such a repository can't be done securely, and is therefore disabled by default.
N: See apt-secure(8) manpage for repository creation and user configuration details.
sudo apt update --allow-insecure-repositories. It will bypass the error saying the repository is unsigned. – Arjun K Shibu Mar 29 '23 at 17:27