feat(pico8_ls): do not use lspconfig.util

Author: TheRealLorenz

lsp/pico8_ls.lua

@@ -4,14 +4,13 @@
 ---
 --- Full language support for the PICO-8 dialect of Lua.
 
-local util = require 'lspconfig.util'
-
 return {
   cmd = { 'pico8-ls', '--stdio' },
   filetypes = { 'p8' },
   root_dir = function(bufnr, on_dir)
-    local fname = vim.api.nvim_buf_get_name(bufnr)
-    on_dir(util.root_pattern('*.p8')(fname))
+    on_dir(vim.fs.root(bufnr, function(name, _)
+      return vim.glob.to_lpeg('*.p8'):match(name) ~= nil
+    end))
   end,
   settings = {},
 }