chore(deps): update ghcr.io/squidfunk/mkdocs-material docker tag to v9.7.3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/squidfunk/mkdocs-material	stage	patch	9.7.2 → 9.7.3

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Release Notes

squidfunk/mkdocs-material (ghcr.io/squidfunk/mkdocs-material)

v9.7.3: mkdocs-material-9.7.3

Compare Source

[!WARNING]

Material for MkDocs is in maintenance mode

Going forward, the Material for MkDocs team focuses on Zensical, a next-gen static site generator built from first principles. We will provide critical bug fixes and security updates for Material for MkDocs until November 2026.

Read the full announcement on our blog

Changes

• Fixed #​8567: Print MkDocs 2.0 incompatibility warning to stderr

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