Update remaining Mason's old address (nvim-lua#1530)

Author: carloscalla

lua/kickstart/plugins/debug.lua

@@ -18,7 +18,7 @@ return {
     'nvim-neotest/nvim-nio',
 
     -- Installs the debug adapters for you
-    'williamboman/mason.nvim',
+    'mason-org/mason.nvim',
     'jay-babu/mason-nvim-dap.nvim',
 
     -- Add your own debuggers here