chore(deps): lock file maintenance

[renovate]

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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Configuration

📅 Schedule: Branch creation - "before 4am on monday" in timezone Europe/Berlin, Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

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• If you want to rebase/retry this PR, check this box

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[claude]

Security & Bug Review

✅ No bugs or security vulnerabilities detected.

This lock file maintenance PR updates 4 dependencies:

• anyio 4.12.0 → 4.12.1
• certifi 2025.11.12 → 2026.1.4 (SSL cert bundle update - security positive)
• filelock 3.20.1 → 3.20.3
• librt 0.7.5 → 0.7.7

All updates are minor/patch versions with no source code changes. CI checks passing (mypy, tests, pre-commit, safety, typeguard, xdoctest, docs-build).

Recommendation: Safe to merge.