Update dependency pymdown-extensions to v9.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
pymdown-extensions	==9.5 -> ==9.6

---

Release Notes

facelessuser/pymdown-extensions

v9.6

Compare Source

9.6

• NEW: Highlight: Allow greater granularity of specifying where language guessing takes place via guess_lang
  option (e.g. block vs inline).
• NEW: Tabbed: Add options for generating tab IDs from tab titles.
• NEW: Snippets: Add support for specifying specific lines for Snippets.
• NEW: Snippets: Commenting out files in block format no longer requires a space directly after ;.
• NEW: Snippets: A new sane way to escape snippets is now available.

---

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, click this checkbox.

---

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