Bump hexo from 7.1.1 to 7.2.0

Bumps [hexo](https://github.com/hexojs/hexo) from 7.1.1 to 7.2.0.
- [Release notes](https://github.com/hexojs/hexo/releases)
- [Commits](hexojs/hexo@v7.1.1...v7.2.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -6,7 +6,7 @@
  "version": "7.0.0"
  },
  "dependencies": {
- "hexo": "7.1.1",
+ "hexo": "7.2.0",
  "hexo-clean-css": "^2.0.0",
  "hexo-generator-feed": "^3.0.0",
  "hexo-generator-index": "^3.0.0",