Update dependency hexo-util to v2.7.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
hexo-util (source)	2.6.0 -> 2.7.0

---

Release Notes

hexojs/hexo-util

### [`v2.7.0`](https://togithub.com/hexojs/hexo-util/releases/tag/2.7.0): v2.7.0 [Compare Source](https://togithub.com/hexojs/hexo-util/compare/2.6.1...2.7.0) #### Features - feat(highlight): add `languageAttr` option [@​renbaoshuo](https://togithub.com/renbaoshuo) \[[#​278](https://togithub.com/hexojs/hexo-util/issues/278)] #### Dependencies - chore: bump mocha from 9.2.2 to 10.0.0 [@​dependabot](https://togithub.com/dependabot) \[[#​277](https://togithub.com/hexojs/hexo-util/issues/277)] #### New Contributors - [@​renbaoshuo](https://togithub.com/renbaoshuo) made their first contribution in [https://github.com/hexojs/hexo-util/pull/278](https://togithub.com/hexojs/hexo-util/pull/278) **Full Changelog**: https://github.com/hexojs/hexo-util/compare/2.6.1...2.7.0 ### [`v2.6.1`](https://togithub.com/hexojs/hexo-util/releases/tag/2.6.1): 2.6.1 [Compare Source](https://togithub.com/hexojs/hexo-util/compare/2.6.0...2.6.1) #### Fixes - refactor(prism): support prismjs alias by [@​SukkaW](https://togithub.com/SukkaW) in [https://github.com/hexojs/hexo-util/pull/274](https://togithub.com/hexojs/hexo-util/pull/274) #### Refactor - refactor: use `textContent` instead of `getText` by [@​yoshinorin](https://togithub.com/yoshinorin) in [https://github.com/hexojs/hexo-util/pull/272](https://togithub.com/hexojs/hexo-util/pull/272) **Full Changelog**: https://github.com/hexojs/hexo-util/compare/2.6.0...2.6.1

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.