Update dependency mkdocs to v1.6.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mkdocs (changelog)	==1.6.0 -> ==1.6.1

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Release Notes

mkdocs/mkdocs (mkdocs)

v1.6.1

Compare Source

Version 1.6.1 (Friday 30th August, 2024)

Fixed

• Fix build error when environment variable SOURCE_DATE_EPOCH=0 is set. #​3795
• Fix build error when mkdocs_theme.yml config is empty. #​3700
• Support python -W and PYTHONWARNINGS instead of overriding the configuration. #​3809
• Support running with Docker under strict mode, by removing 0.0.0.0 dev server warning. #​3784
• Drop unnecessary changefreq from sitemap.xml. #​3629
• Fix JavaScript console error when closing menu dropdown. #​3774
• Fix JavaScript console error that occur on repeated clicks. #​3730
• Fix JavaScript console error that can occur on dropdown selections. #​3694

Added

• Added translations for Dutch. #​3804
• Added and updated translations for Chinese (Simplified). #​3684

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