feat(deps): update renovate/renovate docker tag to v29.12.4

This MR contains the following updates:

Package	Update	Change
renovate/renovate	minor	29.10.1-slim -> 29.12.4-slim

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Release Notes

renovatebot/renovate

v29.12.4

29.12.4 (2021-11-17)

Bug Fixes

• crate: Reduce git concurrency to 1 for crates (#​12718) (4d1e7b1)
• presets: allow spaces in repo names (#​12726) (55d3c04)

v29.12.3

29.12.3 (2021-11-17)

Bug Fixes

• yarn: use @​yarnpkg/cli for yarn 2+ (#​12570) (4f2b3c8)

Continuous Integration

• eslint: Bump Renovate eslint plugin (#​12721) (1e251ca)

v29.12.2

29.12.2 (2021-11-17)

Bug Fixes

• automerge: assign failing MRs (#​12705) (da122b4)

v29.12.1

29.12.1 (2021-11-17)

Bug Fixes

• pypi: normalize simple package lookup (#​12544) (2d1c9df)

v29.12.0

Features

• config: migrate inline with the same sort (#​12091) (5377b1f)

v29.11.1

29.11.1 (2021-11-17)

Bug Fixes

• npm: retain package-lock indentation when massaging (#​12715) (e307f18)

v29.11.0

Features

• manager/kustomize: support HelmChartInflationGenerator (#​12628) (8184bda)

Code Refactoring

• typescript: Refactor more files (#​12696) (a7792bc)

Miscellaneous Chores

• deps: update dependency eslint-plugin-import to v2.25.3 (#​12709) (99a68e4)

Continuous Integration

• build: Remove Python from Renovate dependencies (#​12685) (cf95251)

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