chore(deps): bump hexo from 6.3.0 to 7.0.0

Bumps [hexo](https://github.com/hexojs/hexo) from 6.3.0 to 7.0.0.
- [Release notes](https://github.com/hexojs/hexo/releases)
- [Commits](hexojs/hexo@6.3.0...v7.0.0)

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

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

package.json

@@ -29,7 +29,7 @@
   "dependencies": {
     "bulma-stylus": "0.8.0",
     "deepmerge": "^4.2.2",
-    "hexo": "^6.0.0",
+    "hexo": "^7.0.0",
     "hexo-component-inferno": "^2.0.2",
     "hexo-log": "^3.0.0",
     "hexo-pagination": "^2.0.0",