chore: Bump commonmarker from 0.23.4 to 0.23.6 in /docs

[dependabot[bot]]

Bumps commonmarker from 0.23.4 to 0.23.6.

Release notes

Sourced from commonmarker's releases.

v0.23.6

What's Changed

This release includes two updates from the upstream cmark-gfm library, namely:

• DoS vulnerability in autolink extension per GHSA-cgh3-p57x-9q7q
• Added xmpp: and mailto: support to the autolink extension

Changelog

Sourced from commonmarker's changelog.

Changelog

Commits

• a8f8d76 Merge pull request #190 from anticomputer/main
• ac91634 :gem: release 0.23.6
• 777fd30 Update cmark-upstream to https://github.com/github/cmark-gfm/commit/9d57d8a23...
• 7aaeb37 Merge pull request #188 from stevenlaidlaw/update-to-0290gfm5
• 795e628 Update cmark-upstream to https://github.com/github/cmark-gfm/commit/0578e1e4f...
• 39d19d6 Update cmark-upstream to https://github.com/github/cmark-gfm/commit/766f161ef...
• 63b7bf8 Update FUNDING.yml
• 558c727 Bump to 0.23.5
• 41eee72 lint
• 897e8ed Merge pull request #180 from lumaxis/main
• Additional commits viewable in compare view

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