fix: nvm profile, bump ssh

scripts/install.d/03-ssh.sh

@@ -1,9 +1,9 @@
 #!/usr/bin/env bash
 ssh_target="$HOME/.ssh"
-ssh_key="$ssh_target/id_rsa"
+ssh_key="$ssh_target/id_ed25519"
 ssh_pub="$ssh_key.pub"
 if [ ! -f "$ssh_key" ]; then
-    ssh-keygen -t rsa -b 4096 -f "$ssh_key"
+    ssh-keygen -t ed25519 -f "$ssh_key"
 fi
 
 cat "$ssh_pub"