chore(deploy): deploy the docs with dash 4.0.7

[mhenrixon]

Summary

dash v4.0.7 is released (doctor passes a stale proxy the next deploy reboots automatically, #149; registry login fails fast on a blank credential, #148). Two changes so the docs site deploys with it:

• docs/config/deploy.yml gains minimum_version: 4.0.7 (the key was missing here — an older scaffold).
• .github/workflows/deploy-docs.yml bumps its SHA pin of the docs-kit reusable workflow to zoolutions/docs-kit@833b23a (chore(deploy): require dash 4.0.7 across the docs deploy path docs-kit#79), which installs dash ~> 4.0.7.

Test plan

Config-only change — the docs redeploy after merge is the proof.

https://claude.ai/code/session_01KsqvKPn1c1hWu6NSEQHy1W

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Summary by cubic

Deploys the docs site with dash 4.0.7 so the docs no longer deploy with an older CLI that can't handle the 4.x proxy rename and in-place host migration.

• Bumps the zoolutions/docs-kit workflow pin to the commit that installs dash ~> 4.0.7.
• Adds the missing minimum_version: 4.0.7 key to docs/config/deploy.yml.

^{Written for commit 25ddbd1. Summary will update on new commits.}