Bump vitepress-plugin-group-icons from 1.6.3 to 1.6.4 (#8)

Bumps [vitepress-plugin-group-icons](https://github.com/yuyinws/vitepress-plugin-group-icons) from 1.6.3 to 1.6.4.
- [Release notes](https://github.com/yuyinws/vitepress-plugin-group-icons/releases)
- [Commits](yuyinws/vitepress-plugin-group-icons@v1.6.3...v1.6.4)

---
updated-dependencies:
- dependency-name: vitepress-plugin-group-icons
  dependency-version: 1.6.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]

package-lock.json

@@ -13,7 +13,7 @@
     "@cssnr/vitepress-plugin-contributors": "^0.0.4",
     "@cssnr/vitepress-plugin-copybutton": "^0.0.2",
     "vitepress": "^1.6.4",
-    "vitepress-plugin-group-icons": "^1.6.3"
+    "vitepress-plugin-group-icons": "^1.6.4"
   },
   "devDependencies": {
     "prettier": "^3.6.2"