[neovim] Migrate lsp-saga configuration to >=0.2.3

.config/nvim/lua/plugins/lsp/lsp-saga.lua

@@ -3,12 +3,22 @@ if not status_ok then
 	return
 end
 
-lsp_saga.init_lsp_saga({
-	border_style = "rounded",
-	code_action_icon = "",
-	preview_lines_above = 5,
-	show_outline = {
+lsp_saga.setup({
+	ui = {
+		border = "rounded",
+		code_action_icon = "",
+		colors = {
+			normal_bg = "#222436",
+		},
+	},
+	preview = {
+		lines_above = 5,
+	},
+	outline = {
 		win_width = 45,
 		auto_preview = false,
 	},
+	symbol_in_winbar = {
+		enable = false,
+	},
 })