Update dependency mkdocs-material to v9.1.4

This MR contains the following updates:

Package	Update	Change
mkdocs-material	patch	9.1.3 -> 9.1.4
mkdocs-material	patch	==9.1.3 -> ==9.1.4

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Release Notes

squidfunk/mkdocs-material

v9.1.4: mkdocs-material-9.1.4

Compare Source

• Fixed #​5239: Instant loading breaks anchors in details (9.1.1 regression)
• Fixed #​5211: Anchor following not working for Chinese (9.1.2 regression)

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