chore(deps): update dependency mkdocs-material to v8.2.8

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mkdocs-material (source)	==8.2.7 -> ==8.2.8

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Release Notes

squidfunk/mkdocs-material

v8.2.8

Compare Source

• Bumped MkDocs version to 1.3.0 to mitigate breaking changes in Jinja
• Reverted Jinja version range limitation (added in 8.2.7)
• Improved styling of annotations and fixed borders of code blocks in tabs
• Added background color to code blocks in focused/hovered links
• Added check in tags plugin whether tags overview page exists
• Fixed #​3744: Content tab indicator on wrong position when using back button

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