change package updates to a vim.notify

lua/dep.lua

@@ -638,7 +638,9 @@ local function print_list(cb)
       line = line + 1
     end
 
-    print(string.format("Installed packages (%s):", #packages))
+    vim.notify(string.format("Installed packages (%s):", #packages), 'info', {
+      title = 'Dep',
+    })
     indent = 1
 
     local loaded = {}