chore(deps): update dependency sphinxcontrib-mermaid to v2.1.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
sphinxcontrib-mermaid (changelog)	==2.0.2 → ==2.1.0

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Release Notes

mgaitan/sphinxcontrib-mermaid (sphinxcontrib-mermaid)

v2.1.0

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• Add mermaid_config option for passing a global Mermaid configuration (#​215)
• Load the ZenUML plugin lazily, only on pages that contain a ZenUML diagram, and confine its injected stylesheet to the diagram subtree so it no longer restyles the host theme (#​252)
• Skip injecting the Mermaid JavaScript when the output format does not support it (#​253)
• Fix d3 zoom on nested SVGs (#​179)
• Fix fullscreen button positioning inconsistency (#​225)
• Fix interactions between the fullscreen, zoom, and lazy-render features (#​254)

v2.0.3

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• Capture mmdc error message as string for nicer error display
• Fix local JS module imports on root-level pages by ensuring a valid relative ES module specifier (#​246)
• Defer rendering of Mermaid diagrams hidden by a parent (e.g. Reveal.js slides, unopened tabs) until they become visible, fixing broken SVGs

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