Bump hexo-generator-index from 3.0.0 to 4.0.0 (#102)

Bumps [hexo-generator-index](https://github.com/hexojs/hexo-generator-index) from 3.0.0 to 4.0.0.
- [Release notes](https://github.com/hexojs/hexo-generator-index/releases)
- [Commits](hexojs/hexo-generator-index@v3.0.0...v4.0.0)

---
updated-dependencies:
- dependency-name: hexo-generator-index
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package.json

@@ -15,7 +15,7 @@
     "hexo-generator-archive": "2.0.0",
     "hexo-generator-category": "2.0.0",
     "hexo-generator-feed": "3.0.0",
-    "hexo-generator-index": "3.0.0",
+    "hexo-generator-index": "4.0.0",
     "hexo-generator-searchdb": "1.4.1",
     "hexo-generator-sitemap": "3.0.1",
     "hexo-generator-tag": "2.0.0",

yarn.lock

@@ -1039,10 +1039,10 @@ hexo-generator-feed@3.0.0:
     hexo-util "^2.1.0"
     nunjucks "^3.0.0"
 
-hexo-generator-index@3.0.0:
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/hexo-generator-index/-/hexo-generator-index-3.0.0.tgz#4c9233731e027a6af6491886a4aafe08ffdaffe0"
-  integrity sha512-83AuNN4cWdLVi//3ugR8E3kR6rrOwhXZt+hOCm1IjtIGj353/GlrtpMHpqZHU5kqipzj4miy9dweVdukXglVWw==
+hexo-generator-index@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/hexo-generator-index/-/hexo-generator-index-4.0.0.tgz#2f20cf9d231db30edbccd5be32c92c8aeb5d6d63"
+  integrity sha512-KeM7mOCKWINGFAk1E+CkjMMgqFIv8oaRbGxR7ipkQAp44o4aopkVftma4sdIplOq9WQEWfVYDUK5gEv9J3nzUg==
   dependencies:
     hexo-pagination "3.0.0"