vim: enable lazy.nvim change detection notifications

Now that I am using `nvim-notify` the notifications aren't so annoying
and, most importantly, don't cause the windows to jump up and down.

config/nvim/lua/fschauen/lazy.lua

@@ -44,9 +44,6 @@ M.setup = function()
       border = 'rounded',
       title = '  Lazy  ',
     },
-    change_detection = {
-      notify = false,
-    },
     performance = {
       rtp = {
         disabled_plugins = {
@@ -65,4 +62,3 @@ M.setup = function()
 end
 
 return M
-