build(deps): bump hexo-generator-index from 1.0.0 to 2.0.0

Bumps [hexo-generator-index](https://github.com/hexojs/hexo-generator-index) from 1.0.0 to 2.0.0.
- [Release notes](https://github.com/hexojs/hexo-generator-index/releases)
- [Commits](https://github.com/hexojs/hexo-generator-index/compare/1.0.0...2.0.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package.json

@@ -15,7 +15,7 @@
     "hexo": "^5.0.0",
     "hexo-generator-archive": "^1.0.0",
     "hexo-generator-category": "^1.0.0",
-    "hexo-generator-index": "^1.0.0",
+    "hexo-generator-index": "^2.0.0",
     "hexo-generator-tag": "^1.0.0",
     "hexo-renderer-ejs": "^1.0.0",
     "hexo-renderer-marked": "^3.0.0",