fix(deps): update dependency remark-custom-blocks to ^2.6.1 for gatsby-remark-custom-blocks

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
remark-custom-blocks (source)	^2.6.0 -> ^2.6.1

---

Release Notes

zestedesavoir/zmarkdown (remark-custom-blocks)

### [`v2.6.1`](https://togithub.com/zestedesavoir/zmarkdown/compare/remark-custom-blocks@2.6.0...remark-custom-blocks@2.6.1) [Compare Source](https://togithub.com/zestedesavoir/zmarkdown/compare/remark-custom-blocks@2.6.0...remark-custom-blocks@2.6.1)

---

Configuration

📅 Schedule: Branch creation - "before 7am on the first day of the month" in timezone GMT, 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.