Updated GPG Signing key for Warp Linux Releases

Warp has rotated the GPG signing subkey used for its Linux software releases as a precautionary measure following a security incident. Although there is no evidence of misuse, this action was taken out of an abundance of caution. The post provides specific command-line instructions for users on various Linux distributions, including Ubuntu, Arch, and Fedora, to import the updated public key. It also includes the fingerprints for the new and revoked subkeys for verification purposes.