Biome 2.0 with format (#510)

* execute migrate command

* migrate to v2

* update config

* supress linter error

src/plugins/expressive-code/language-badge.ts

@@ -6,7 +6,8 @@ import { definePlugin } from "@expressive-code/core";
 export function pluginLanguageBadge() {
 	return definePlugin({
 		name: "Language Badge",
-		baseStyles: ({ cssVar }) => `
+		// @ts-ignore
+		baseStyles: ({ _cssVar }) => `
       [data-language]::before {
         position: absolute;
         z-index: 2;