voyager: update certs. Also update flake

hosts/voyager/services/code-server.nix

@@ -1,19 +0,0 @@
-{ config, pkgs, lib, ... }:
-let
- cfg = config.services.code-server;
-in {
-  services.code-server = {
-    enable = true;
-    host = "127.0.1.2";
-    port = 4444;
-  };
-  services.nginx.virtualHosts."code.home.feal.no" = {
-    forceSSL = true;
-    sslCertificateKey = "/etc/ssl-snakeoil/code_home_feal_no.key";
-    sslCertificate    = "/etc/ssl-snakeoil/code_home_feal_no.crt";
-    locations."/" = {
-      proxyPass = "http://${cfg.host}:${toString cfg.port}";
-      proxyWebsockets = true;
-    };
-  };
-}

hosts/voyager/services/snappymail.nix

@@ -7,7 +7,7 @@
     hostname = "mail.home.feal.no";
   };
   services.nginx.virtualHosts."${config.services.snappymail.hostname}" = let
-    certPath = "/etc/ssl-snakeoil/mail_home_feal_no";
+    certPath = "/etc/ssl-snakeoil/home.feal.no";
   in {
     addSSL = true;