fix(deps): update renovate/renovate docker tag to v29.29.2

This MR contains the following updates:

Package	Update	Change
renovate/renovate	patch	29.29.0 -> 29.29.2

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Release Notes

renovatebot/renovate

v29.29.2

29.29.2 (2021-12-01)

Bug Fixes

• match source url prefixes compares case insensitive (#​12896) (3a9aeb0)

Documentation

• dashboard: fix missing syntax highlight (#​12910) (dd7bb46)

v29.29.1

29.29.1 (2021-12-01)

Code Refactoring

• util/fs: Enable strict null checks (#​12904) (879e59f)

Build System

• deps: update dependency semantic-release to v18.0.1 (#​12908) (47f54e7)

Documentation

• update references to renovate/renovate to v29.29.0 (#​12911) (dc9b5a0)

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