deps: bump mkdocs from 1.4.1 to 1.4.2

[dependabot]

Bumps mkdocs from 1.4.1 to 1.4.2.

Release notes

Sourced from mkdocs's releases.

1.4.2

• Officially support Python 3.11 (#3020)

  Note: Simply upgrading to Python 3.11 can cut off 10-15% of your site's build time.

• Support multiple instances of the same plugin (#3027)

  If a plugin is specified multiple times in the list under the plugins: config, that will create 2 (or more) instances of the plugin with their own config each.

  Previously this case was unforeseen and, as such, bugged.

  Now even though this works, by default a warning will appear from MkDocs anyway, unless the plugin adds a class variable supports_multiple_instances = True.

• Bugfix (regression in 1.4.1): Don't error when a plugin puts a plain string into warnings (#3016)

• Bugfix: Relative links will always render with a trailing slash (#3022)

  Previously under use_directory_urls, links from a sub-page to the main index page rendered as e.g. <a href="../.."> even though in all other cases the links look like <a href="../../">. This caused unwanted behavior on some combinations of Web browsers and servers. Now this special-case bug was removed.

• Built-in "mkdocs" theme now also supports Norwegian language (#3024)

• Plugin-related warnings look more readable (#3016)

See commit log.

Commits

• ec7eee6 Release 1.4.2 (#3032)
• c99ec45 Support multiple instances of the same plugin (#3027)
• 452c39e Chore dependency upgrade
• f190c35 Translate mkdocs theme to Norwegian (nb and nn) (#3024)
• c576f07 Declare support for Python 3.11 (#3020)
• 32359f3 Relative links end with slash even for homepage links (#3022)
• 1fa2af7 Expand type checking coverage (#3019)
• d76cae9 Merge pull request #3016 from mkdocs/optw
• 9d73c2a Reduce redundancy in config errors/warnings
• 427d553 Let plugins put strings into warnings
• Additional commits viewable in compare view

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