chore(deps): update lobehub/lobe-chat docker tag to v1.21.5

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
lobehub/lobe-chat	patch	v1.21.4 -> v1.21.5

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Release Notes

lobehub/lobe-chat (lobehub/lobe-chat)

v1.21.5

Compare Source

Version 1.21.5

^{Released on 2024-10-05}

💄 Styles

• misc: Support shadcn in Artifacts.

Improvements and Fixes

Styles

• misc: Support shadcn in Artifacts, closes #​4256 (863bae5)

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