chore(deps): refresh pip-compile outputs

[renokeeper]

This PR contains the following updates:

Update	Change
lockFileMaintenance	All locks refreshed

🔧 This Pull Request updates lock files to use the latest dependency versions.

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This PR has been generated by Mend Renovate.

[greptile-apps]

Greptile Summary

Refreshes the documentation dependency lockfile by upgrading backrefs from 7.0 to 8.0 and updating its hashes.

Confidence Score: 5/5

The PR appears safe to merge with no actionable issues identified.

The change is limited to a generated documentation lockfile entry, and the updated dependency remains within the consuming package's declared constraint.

Important Files Changed

Filename	Overview
docs/requirements.txt	Updates the hash-pinned transitive backrefs dependency used by MkDocs Material; no actionable defect was established.

_{Reviews (1): Last reviewed commit: "chore(deps): refresh pip-compile outputs" | Re-trigger Greptile}