Update nvim-lspconfig for its newest version

lua/plugins/50-lsp.lua

@@ -1,4 +1,4 @@
-function setup_keymap_lsp()
+local function setup_keymap_lsp()
     -- -- Global mappings.
     -- -- See `:help vim.diagnostic.*` for documentation on any of the below functions
     -- vim.keymap.set("n", "<leader>e", vim.diagnostic.open_float)
@@ -36,29 +36,6 @@ function setup_keymap_lsp()
     })
 end
 
-local lua_ls_opts = {
-    settings = {
-        Lua = {
-            runtime = {
-                -- Tell the language server which version of Lua you're using (most likely LuaJIT in the case of Neovim)
-                version = "LuaJIT",
-            },
-            diagnostics = {
-                -- Get the language server to recognize the `vim` global
-                globals = { "vim" },
-            },
-            workspace = {
-                -- Make the server aware of Neovim runtime files
-                library = vim.api.nvim_get_runtime_file("", true),
-            },
-            -- Do not send telemetry data containing a randomized but unique identifier
-            telemetry = {
-                enable = false,
-            },
-        },
-    },
-}
-
 return {
     {
         "neovim/nvim-lspconfig",
@@ -85,13 +62,22 @@ return {
 
             mason.setup()
             mason_lsp.setup()
-            mason_lsp.setup_handlers {
-                function (server_name) -- default handler (optional)
-                    require("lspconfig")[server_name].setup {}
-                end,
 
-                ["lua_ls"] = function ()
+            vim.lsp.config('lua_ls', {
-                    require("lspconfig")["lua_ls"].setup(lua_ls_opts)
+                on_init = function(client)
+                    client.config.settings.Lua = vim.tbl_deep_extend('force', client.config.settings.Lua, {
+                        runtime = {
+                            version = "LuaJIT",
+                        },
+                        diagnostics = {
+                            -- Get the language server to recognize the `vim` global
+                            globals = { "vim" },
+                        },
+                        -- Do not send telemetry data containing a randomized but unique identifier
+                        telemetry = {
+                            enable = false,
+                        }
+                    }
                 end
             }