Sparkle has deprecated signing updates with DSA for a long time. MacVim has also added an EdDSA key for a while now. This means we can remove the DSA key and still be pretty safe and certain that vast majority of MacVim users can still update from old versions of MacVim to the new one, using only the EdDSA key. This makes the update process easier and we don't have to use legacy tools to sign each update with the deprecated DSA key.
Sparkle has deprecated signing updates with DSA for a long time. MacVim has also added an EdDSA key for a while now. This means we can remove the DSA key and still be pretty safe and certain that vast majority of MacVim users can still update from old versions of MacVim to the new one, using only the EdDSA key. This makes the update process easier and we don't have to use legacy tools to sign each update with the deprecated DSA key.