chore(deps): bump werkzeug from 3.1.4 to 3.1.5 in /backend/requirements

[dependabot]

Bumps werkzeug from 3.1.4 to 3.1.5.

Release notes

Sourced from werkzeug's releases.

3.1.5

This is the Werkzeug 3.1.5 security fix release, which fixes security issues and bugs but does not otherwise change behavior and should not result in breaking changes compared to the latest feature release.

PyPI: https://pypi.org/project/Werkzeug/3.1.5/ Changes: https://werkzeug.palletsprojects.com/page/changes/#version-3-1-5 Milestone: https://github.com/pallets/werkzeug/milestone/43?closed=1

• safe_join on Windows does not allow more special device names, regardless of extension or surrounding spaces. GHSA-87hc-h4r5-73f7
• The multipart form parser handles a \r\n sequence at a chunk boundary. This fixes the previous attempt, which caused incorrect content lengths. #3065 #3077
• Fix AttributeError when initializing DebuggedApplication with pin_security=False. #3075

Changelog

Sourced from werkzeug's changelog.

Version 3.1.5

Released 2026-01-08

• safe_join on Windows does not allow more special device names, regardless of extension or surrounding spaces. :ghsa:87hc-h4r5-73f7
• The multipart form parser handles a \r\n sequence at a chunk boundary. This fixes the previous attempt, which caused incorrect content lengths. :issue:3065 :issue:3077
• Fix AttributeError when initializing DebuggedApplication with pin_security=False. :issue:3075

Commits

• e3d06f4 release version 3.1.5
• 7ae1d25 Merge commit from fork
• 37797ab safe_join prevents windows special device names with compound extensions
• 3db44c7 fix duplicate reference
• a40f8fa fix class name typo
• 0f76c35 Correct parsing up to a potential partial boundary (#3081)
• 1049dd6 Correct parsing up to a potential partial boundary
• b48878c initialize _pin in debugger (#3078)
• fa0f4f2 initialize _pin
• f637275 start version 3.1.5
• Additional commits viewable in compare view

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Summary by cubic

Upgrade Werkzeug to 3.1.5 in backend requirements to pick up security and bug fixes. Fixes Windows safe_join device-name handling, multipart boundary parsing, and a debugger init error; no breaking changes expected.

^{Written for commit f665c8f. Summary will update on new commits.}

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