Update dependency mkdocstrings to v0.29.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
mkdocstrings (changelog)	==0.28.3 -> ==0.29.0

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Release Notes

mkdocstrings/mkdocstrings (mkdocstrings)

v0.29.0

Compare Source

Compare with 0.28.3

This is the last version before v1!

Build

• Depend on MkDocs 1.6 (11bc400 by Timothée Mazzucotelli).

Features

• Support rendering backlinks through handlers (d4c7b9c by Timothée Mazzucotelli). Issue-723, Issue-mkdocstrings-python-153, PR-739

Code Refactoring

• Save and forward titles to autorefs (f49fb29 by Timothée Mazzucotelli).
• Use a combined event (each split with a different priority) for on_env (8d1dd75 by Timothée Mazzucotelli).

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Configuration

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