chore(deps): update github artifact actions (major)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/download-artifact	action	major	v6 → v7
actions/upload-artifact	action	major	v5 → v6

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Release Notes

actions/download-artifact (actions/download-artifact)

v7

Compare Source

actions/upload-artifact (actions/upload-artifact)

v6

Compare Source

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Configuration

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Project	Deployment	Review	Updated (UTC)
kil-dev	Ready	Preview, Comment	Jan 22, 2026 1:59am

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