Bumps [filelock](https://github.com/tox-dev/py-filelock) from 3.18.0 to 3.20.3.

Release notes

3.20.3

What's Changed

Fix TOCTOU symlink vulnerability in SoftFileLock by @gaborbernat in tox-dev/filelock#465

Full Changelog: https://github.com/tox-dev/filelock/compare/3.20.2...3.20.3

3.20.2

What's Changed

Support Unix systems without O_NOFOLLOW by @mwilliamson in tox-dev/filelock#463

[pre-commit.ci] pre-commit autoupdate by @pre-commit-ci[bot] in tox-dev/filelock#464

New Contributors

@mwilliamson made their first contribution in tox-dev/filelock#463

Full Changelog: https://github.com/tox-dev/filelock/compare/3.20.1...3.20.2

3.20.1

What's Changed

CVE-2025-68146: Fix TOCTOU symlink vulnerability in lock file creation by @gaborbernat in tox-dev/filelock#461

Full Changelog: https://github.com/tox-dev/filelock/compare/3.20.0...3.20.1

3.20.0

What's Changed

Add tox.toml to sdist by @mtelka in tox-dev/filelock#436

Update docs with example by @znichollscr in tox-dev/filelock#438

Add 3.14 support and drop 3.9 by @gaborbernat in tox-dev/filelock#448

New Contributors

@mtelka made their first contribution in tox-dev/filelock#436

@znichollscr made their first contribution in tox-dev/filelock#438

Full Changelog: https://github.com/tox-dev/filelock/compare/3.19.1...3.20.0

3.19.1

What's Changed

add 3.14t (free threading) to matrix by @paultiq in tox-dev/filelock#433

Increase test coverage by @paultiq in tox-dev/filelock#434

... (truncated)

Changelog

Sourced from filelock's changelog.

########### Changelog ###########

3.24.3 (2026-02-19)

🐛 fix(unix): handle ENOENT race on FUSE/NFS during acquire :pr:495

🐛 fix(ci): add trailing blank line after changelog entries :pr:492

3.24.2 (2026-02-16)

🐛 fix(rw): close sqlite3 cursors and skip SoftFileLock Windows race :pr:491

🐛 fix(test): resolve flaky write non-starvation test :pr:490

📝 docs: restructure using Diataxis framework :pr:489

3.24.1 (2026-02-15)

🐛 fix(soft): resolve Windows deadlock and test race condition :pr:488

3.24.0 (2026-02-14)

✨ feat(lock): add lifetime parameter for lock expiration (#68) :pr:486

✨ feat(lock): add cancel_check to acquire (#309) :pr:487

🐛 fix(api): detect same-thread self-deadlock :pr:481

✨ feat(mode): respect POSIX default ACLs (#378) :pr:483

🐛 fix(win): eliminate lock file race in threaded usage :pr:484

✨ feat(lock): add poll_interval to constructor :pr:482

🐛 fix(unix): auto-fallback to SoftFileLock on ENOSYS :pr:480

3.23.0 (2026-02-14)

📝 docs: move from Unlicense to MIT :pr:479

📝 docs: add fasteners to similar libraries :pr:478

3.22.0 (2026-02-14)

🐛 fix(soft): skip stale detection on Windows :pr:477

✨ feat(soft): detect and break stale locks :pr:476

... (truncated)

Commits

41b42dd Fix TOCTOU symlink vulnerability in SoftFileLock (#465)
f2e7d40 [pre-commit.ci] pre-commit autoupdate (#464)
5088854 Support Unix systems without O_NOFOLLOW (#463)
377f622 [pre-commit.ci] pre-commit autoupdate (#460)
4724d7f Fix TOCTOU symlink vulnerability in lock file creation (#461)
cb69414 Bump actions/upload-artifact from 5 to 6 (#459)
0769294 Bump actions/download-artifact from 6 to 7 (#458)
414193a [pre-commit.ci] pre-commit autoupdate (#457)
1456797 [pre-commit.ci] pre-commit autoupdate (#456)
8d6bf90 Bump actions/checkout from 5 to 6 (#455)
Additional commits viewable in compare view

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--- ## Summary by cubic Bump filelock from 3.18.0 to 3.20.3 to fix a symlink TOCTOU vulnerability and improve Unix compatibility. Only uv.lock is updated. - **Dependencies** - Upgrade filelock to 3.20.3. - Security: fixes symlink TOCTOU in lock creation and SoftFileLock. - Compatibility: supports Unix systems without O_NOFOLLOW. - **Migration** - Upstream drops Python 3.9; ensure CI/runtime aren’t pinned to 3.9. ^{Written for commit fd0468960379b1207be96b00c0b3b534097440b9. Summary will update on new commits.}