chore(deps): bump hexo-util from 2.7.0 to 3.0.1 (#192)

Bumps [hexo-util](https://github.com/hexojs/hexo-util) from 2.7.0 to 3.0.1.
- [Release notes](https://github.com/hexojs/hexo-util/releases)
- [Commits](hexojs/hexo-util@2.7.0...v3.0.1)

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

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package.json

@@ -31,7 +31,7 @@
   "bugs": "https://github.com/hexojs/hexo-renderer-markdown-it/issues",
   "homepage": "https://github.com/hexojs/hexo-renderer-markdown-it",
   "dependencies": {
-    "hexo-util": "^2.1.0",
+    "hexo-util": "^3.0.1",
     "markdown-it": "^13.0.1",
     "markdown-it-abbr": "^1.0.4",
     "markdown-it-attrs": "^4.1.3",