Update dependency mkdocs-material to v9.4.0

This MR contains the following updates:

Package	Update	Change
mkdocs-material	minor	9.3.2 -> 9.4.0
mkdocs-material	minor	==9.3.2 -> ==9.4.0

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Release Notes

squidfunk/mkdocs-material

v9.4.0: mkdocs-material-9.4.0

Compare Source

• Added Belarusian translations
• Added version info to entrypoint of package
• Added emoji extension as a replacement for materialx
• Improved slate color scheme (dark mode) - now even darker
• Restructured project to improve development experience
• Updated MkDocs to 1.5.3
• Fixed #​3890: Development mode crash on Linux

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