chore(deps): update renovate/renovate docker tag to v39.21.1

This MR contains the following updates:

Package	Type	Update	Change
renovate/renovate (source)	image	minor	39.20.6 -> 39.21.1

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Release Notes

renovatebot/renovate (renovate/renovate)

v39.21.1

Compare Source

Bug Fixes

• deps: update dependency mkdocs-material to v9.5.45 (#​32631) (9f889fb)

Miscellaneous Chores

• deps: update aquasecurity/trivy-action action to v0.29.0 (#​32628) (b8d7e15)

Build System

• deps: update dependency graph-data-structure to v4 (#​32320) (cb20666)

v39.21.0

Compare Source

Features

• bundler: add inline source support (#​32600) (8e52625)

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