plugin: ensure to use the legacy tag for fidget

- Ensures to use the legacy tag for the fidget plugin, as it will be
  under active development and rewritting.

Co-Authored-by: iGor milhit <igor.milhit@unige.ch>

init.lua

@@ -87,7 +87,7 @@ require('lazy').setup({
 
       -- Useful status updates for LSP
       -- NOTE: `opts = {}` is the same as calling `require('fidget').setup({})`
-      { 'j-hui/fidget.nvim', opts = {} },
+      { 'j-hui/fidget.nvim', tag = "legacy", opts = {} },
 
       -- Additional lua configuration, makes nvim stuff amazing!
       'folke/neodev.nvim',