don't validate yaml files

lua/setup/lspinstall.lua

@@ -152,6 +152,13 @@ lsp_installer.on_server_ready(function(server)
       },
     }
   end
+  if server.name == 'yamlls' then
+    opts.settings = {
+      yaml = {
+        validate = false
+      }
+    }
+  end
 
   -- This setup() function is exactly the same as lspconfig's setup function (:help lspconfig-quickstart)
   server:setup(opts)