Update dependency markdown-it-prism to v4

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
markdown-it-prism	3.0.1 → 4.0.0

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Release Notes

jGleitz/markdown-it-prism (markdown-it-prism)

v4.0.0

Compare Source

• fix!: remove custom fence renderer; markdown-it-attrs v5 compatibility (#​1121) (f280bd7), closes #​1120

BREAKING CHANGES

1. The language-* CSS class is now placed only on the <code> HTML tag, and no longer additionally on <pre>. This brings the plugin back in line with how markdown-it behaves out of the box. When migrating to this version, check your CSS selectors for anything targeting a class starting with language- on <pre> elements.
2. Users who combine this plugin with markdown-it-attrs must use markdown-it-attrs v5.0.0 or later for full compatibility. markdown-it-attrs is now declared by this plugin as an optional peer dependency with a minium version of 5.0.0.
3. Users who combine this plugin with markdown-it-attrs and configured highlightInlineCode: true for markdown-it-prism while also specifying allowedAttributes for markdown-it-attrs must include "language" in the allowedAttributes for markdown-it-prism’s highlighting to work.

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