Update dependency markdown-it-anchor to v8.1.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
markdown-it-anchor	8.1.0 -> 8.1.2

---

Release Notes

valeriangalliat/markdown-it-anchor

### [`v8.1.2`](https://togithub.com/valeriangalliat/markdown-it-anchor/blob/master/CHANGELOG.md#​812---2021-07-23) [Compare Source](https://togithub.com/valeriangalliat/markdown-it-anchor/compare/v8.1.1...v8.1.2) - Fix `prepublish` script not being run on `npm publish` anymore. - Update the `dist` code. ### [`v8.1.1`](https://togithub.com/valeriangalliat/markdown-it-anchor/blob/master/CHANGELOG.md#​811---2021-07-23) [Compare Source](https://togithub.com/valeriangalliat/markdown-it-anchor/compare/v8.1.0...v8.1.1) - Fix `ReferenceError` with `process.emitWarning` in the browser. (\[[#​102](https://togithub.com/valeriangalliat/markdown-it-anchor/issues/102)])

---

Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled due to failing status checks.

♻ 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 WhiteSource Renovate. View repository job log here.