Update docker.io/squidfunk/mkdocs-material Docker tag to v9.4.9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker.io/squidfunk/mkdocs-material	final	patch	9.4.8 -> 9.4.9

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Release Notes

squidfunk/mkdocs-material (docker.io/squidfunk/mkdocs-material)

v9.4.9: mkdocs-material-9.4.9

Compare Source

• Fixed #​6344: Long entries cutoff in table of contents
• Fixed #​6336: Custom template for glob archive not working with pagination
• Fixed #​6328: Blog plugin crashes for locales with dashes, e.g. pt-BR
• Fixed #​6327: Copy-to-clipboard button doesn't trim trailing line feed
• Fixed #​6302: Version strings not matched when using mike, only aliases
• Fixed instant navigation progress indicator for gzipped content in Chrome
• Fixed rendering bug on details marker rotation in Firefox

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