Refactor deprecated gitea options

modules/devops.nix

@@ -1,5 +1,4 @@
 { config, pkgs, lib, ... }: {
-
   # Set up Gitea with LFS support
   services.gitea = {
     enable = true;
@@ -9,11 +8,14 @@
       type = "postgres";
       passwordFile = config.age.secrets.gitea.path;
     };
-    cookieSecure = true;
-    disableRegistration = true;
     repositoryRoot = "/vault/git";
     appName = "Gitea";
     lfs.enable = true;
-    settings.ui.DEFAULT_THEME = "arc-green";
+    settings = {
+      ui.DEFAULT_THEME = "arc-green";
+      session.COOKIE_SECURE = true;
+      service.DISABLE_REGISTRATION = true;
+      server.DISABLE_SSH = true;
+    };
   };
 }