Update dependency mkdocs-material to v8.5.6

This MR contains the following updates:

Package	Update	Change
mkdocs-material	patch	8.5.5 -> 8.5.6
mkdocs-material	patch	==8.5.5 -> ==8.5.6

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Release Notes

squidfunk/mkdocs-material

v8.5.6

Compare Source

• Modernized appearance of admonitions (with fallback, see docs)
• Improved appearance of inline code blocks in admonition titles

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