chore(deps): update filelock requirement from <4.0.0,>=3.19.0 to >=4.0.5,<5.0.0 in /requirements/in

[dependabot]

Updates the requirements on filelock to permit the latest version.

Release notes

Sourced from filelock's releases.

4.0.5

What's Changed

• fix(marker): preserve live owners by @​DawnofGenX in tox-dev/filelock#751
• fix(tests): separate mode and access checks by @​pasmud in tox-dev/filelock#753
• fix(read-write): honor instance defaults by @​DawnofGenX in tox-dev/filelock#752
• fix(async): validate blocking read-write timeouts by @​pasmud in tox-dev/filelock#755
• fix(strict): handle vanished unreadable claims by @​januththedev in tox-dev/filelock#754

New Contributors

• @​DawnofGenX made their first contribution in tox-dev/filelock#751
• @​pasmud made their first contribution in tox-dev/filelock#753
• @​januththedev made their first contribution in tox-dev/filelock#754

Full Changelog: tox-dev/filelock@4.0.4...4.0.5

Changelog

Sourced from filelock's changelog.

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

.. towncrier-draft-entries:: Unreleased

.. towncrier release notes start

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4.0.8 (2026-10-01)

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• ReadWriteLock.release() and SoftReadWriteLock.release() from a thread that does not hold the write lock now raise RuntimeError instead of dropping the holder's lock and letting a second writer in. :pr:761

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4.0.7 (2026-09-29)

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• File locks now raise ValueError at construction when mode denies the owner read or write, such as mode=0o444, instead of failing on a later acquire and staying broken until someone deletes the lock file. :pr:760

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4.0.6 (2026-09-28)

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• Reject negative blocking timeouts other than -1 before reentrant ReadWriteLock and SoftReadWriteLock acquisition. Preserve unlimited waits and nonblocking acquisition. :pr:756

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4.0.5 (2026-09-28)

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• Fix MarkerSoftFileLock acquisition and prevent contenders from evicting live protocol-2 owners after two seconds. Reclaim recognized records after owner death; preserve unknown contracts. :pr:749
• Honor instance timeout and blocking settings in sync and async ReadWriteLock acquisition, including waits between tasks on one instance. Preserve explicit per-call overrides. :pr:750
• Skip access-denial checks when the process can read mode-0o000 files. Keep mode-bit checks enabled for privileged processes on filesystems that support POSIX permissions. :pr:753
• Skip vanished StrictSoftFileLock claims after a read-permission retry expires. Recheck the directory before raising a protocol error so concurrent removal does not turn a stale claim listing into an acquisition failure. :pr:754
• Reject negative timeouts other than -1 in blocking AsyncReadWriteLock and AsyncSoftReadWriteLock acquisitions. Keep -1 as an unlimited wait and ignore timeouts when blocking=False. :pr:755

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4.0.4 (2026-09-26)

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• Hostnames that still differ after their first 253 escaped characters now publish distinct owners, so a soft lock no longer takes another such host's live holder for its own and reclaims its marker. :pr:748

... (truncated)

Commits

• bbb843e Release 4.0.5
• 83fa216 test(read-write): cover omitted arguments (#754)
• aaa26f2 fix(async): validate blocking read-write timeouts (#755)
• 218e49e fix(read-write): honor instance defaults (#752)
• 2e973f2 fix(tests): separate mode and access checks (#753)
• 585e01c fix(marker): preserve live owners (#751)
• 8ffba8a Release 4.0.4
• 79a2e81 🐛 fix(identity): digest the cut tail of long hostnames (#748)
• 5283806 Release 4.0.3
• fd10e07 🐛 fix(api): skip the fork audit hook on CPython <3.12 (#747)
• Additional commits viewable in compare view

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