chore: 更新版本到 2.0.4 [skip ci]

manifest-firefox.json

@@ -1,7 +1,7 @@
 {
   "manifest_version": 2,
   "name": "Xget Now",
-  "version": "2.0.3",
+  "version": "2.0.4",
   "description": "为 Firefox 浏览器提供的 Xget 下载加速扩展，支持 GitHub、GitLab、npm、PyPI 等众多平台的文件下载加速",
   "browser_action": {
     "default_icon": {

manifest.json

@@ -89,7 +89,7 @@
     "storage",
     "activeTab"
   ],
-  "version": "2.0.3",
+  "version": "2.0.4",
   "web_accessible_resources": [
     {
       "matches": [

package.json

@@ -59,5 +59,5 @@
     "build": "echo 'No build process needed for Chrome extension'",
     "test": "echo 'No tests specified'"
   },
-  "version": "2.0.3"
+  "version": "2.0.4"
 }