build(deps-dev): update mkdocs-material requirement from 9.1.0 to 9.1.15

[dependabot[bot]]

Updates the requirements on mkdocs-material to permit the latest version.

Release notes

Sourced from mkdocs-material's releases.

mkdocs-material-9.1.15

• Fixed #5566: Indicate color scheme to operating system
• Fixed #5565: Update Dockerfile to latest version of base image
• Fixed #5554: Add additional version tags (9, 9.1) to Docker image
• Fixed #5536: Strip tags of ARIA labels in table of contents

Changelog

Sourced from mkdocs-material's changelog.

mkdocs-material-9.1.15+insiders-4.35.2 (2023-05-29)

• Fixed #5555: Blog plugin crashes when computing readtime for emojis

mkdocs-material-9.1.15 (2023-05-29)

• Fixed #5566: Indicate color scheme to operating system
• Fixed #5565: Update Dockerfile to latest version of base image
• Fixed #5554: Add additional version tags (9, 9.1) to Docker image
• Fixed #5536: Strip tags of ARIA labels in table of contents

mkdocs-material-9.1.14+insiders-4.35.1 (2023-05-20)

• Fixed internal handling of errors in social plugin

mkdocs-material-9.1.14+insiders-4.35.0 (2023-05-20)

• Improve editing experience and stability of social plugin
• Added support for custom layout syntax validation in social plugin
• Added support for layer origin for easier placement in social plugin
• Added support for in- and exclusion patterns in social plugin
• Catch and print syntax errors in custom layouts

mkdocs-material-9.1.14 (2023-05-20)

• Updated Armenian and Greek translations

mkdocs-material-9.1.13+insiders-4.34.1 (2023-05-16)

• Disable social plugin debug mode by default on mkdocs build
• Added warning in social plugin debug mode when font style couldn't be found
• Set default concurrency of built-in multi-threaded plugins to CPUs - 1
• Fixed #5521: Social plugin triggers race condition when downloading fonts
• Fixed #5515: Social plugin crashes when concurrency is set to 1

mkdocs-material-9.1.13 (2023-05-16)

• Fixed #5517: Social plugin crashes for some fonts (e.g. Open Sans)

mkdocs-material-9.1.12+insiders-4.34.0 (2023-05-14)

• Added support for new overflow mode to auto-fit text in social plugin
• Reduced subtle rendering bugs in (code) annotations due to subpixel rounding
• Improved print styles for (code) annotation lists
• Improved performance of social plugin, now 3x as fast
• Improved interop of typeset plugin with MkDocstrings
• Fixed logo location for variants of default template in social plugin
• Fixed #5446: Built-in typeset plugin picks up headings in code blocks

mkdocs-material-9.1.12+insiders-4.33.2 (2023-05-12)

... (truncated)

Commits

• 06d1ba1 Prepare 9.1.15 release
• 3d70640 Updated dependencies
• 0f1866b Documentation
• aa4befa Merge branch 'master' of github.com:squidfunk/mkdocs-material
• fe0c966 Added color-scheme property to indicate color scheme to OS
• 2fa92de Merge pull request #5565 from yubiuser/update_docker
• 7c19f46 Only user major.minor for python version
• f37702a Added major.minor and major tags to Docker image
• e0b3022 Update Dockerfile to latest alpine
• f84725d Added tutorial on building custom social cards
• Additional commits viewable in compare view

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