chore: trust SSH signing key

packetmix/homes/freshlybakedcake+development/ssh.nix

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     "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHYUFynzvO9dfLqn7hssLIeHBp/y5V1lKLyCnDmThgDg boltless.me" = [
       "[e-mail]" # Sourced by Coded from Tangled
     ];
+    "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGUkKr2wgFDgkU1VbwPIbBS8eL6Z8imAGaY4NUVrVNO7" = [
+      "[e-mail]" # Sourced by minion from GitHub
+    ];
   };
 }