fix(deps): update ghcr.io/containerbase/base docker tag to v14.29.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
ghcr.io/containerbase/base	final	minor	14.28.0 → 14.29.0

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Release Notes

containerbase/base (ghcr.io/containerbase/base)

v14.29.0

Compare Source

Features

• node: resolve partial npm tool versions to the newest matching release (#​7633) (a0e9d0a)
• resolve partial pip, poetry and nuget versions to the newest matching release (#​7635) (758e727)
• show tool-specific version notes in the install-tool help (#​7632) (596c601)

Bug Fixes

• python: honour the pip index for pip tool installs (#​7643) (17257f8)
• ruby: honour CONTAINERBASE_CDN_GEM for gem installs (#​7642) (21e7f18)

Documentation

• list all package manager tools in the custom registries docs and lint them (#​7644) (db6ead2)

Continuous Integration

• harden the workflows (#​7639) (4240025)
• lint the workflows with actionlint and zizmor (#​7638) (9b0c34d)
• skip the build and docker tests for docs-only pull requests (#​7636) (fd0f56b), closes #​5352

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