chore(deps-dev): update ruff requirement from >=0.14.0 to >=0.15.18 in /backend

[dependabot]

Updates the requirements on ruff to permit the latest version.

Release notes

Sourced from ruff's releases.

0.15.18

Release Notes

Released on 2026-06-18.

Preview features

• Handle nested ruff:ignore comments (#25791)
• Stop displaying severity in output (#26050)
• Use human-readable names in CLI output (#25937)
• Use human-readable names in LSP and playground diagnostics (#26058)
• [pydocstyle] Prevent property docstrings starting with verbs (D421) (#23775)
• [flake8-pyi] Extend PYI033 to Python files (#26129)

Bug fixes

• Detect equivalent numeric mapping keys (#26009)
• Detect mapping keys equivalent to booleans (#25982)
• Detect repeated signed and complex dictionary keys (#26007)

Rule changes

• [flake8-pyi] Rename PYI033 to legacy-type-comment (#26131)

Performance

• Use ThinVec for call keywords (#25999)
• Inline parser recovery context checks (#26038)
• Match parser keywords as bytes (#26037)
• Move value parsing out of lexing (#25360)

Server

• Render subdiagnostics and secondary annotations as related information (#26011)

Documentation

• Update fix availability for always-fixable rules (#26091)
• [flake8-tidy-imports] Add fix safety section (TID252) (#17491)

Parser

• Reject __debug__ lambda parameters (#26022)
• Reject _ as a match-pattern target (#25977)
• Reject multiple starred names in sequence patterns (#25976)
• Reject parenthesized star imports (#26021)
• Reject starred comprehension targets (#26023)
• Reject unparenthesized generator expressions in class bases (#25978)
• Reject yield expressions after commas (#26024)
• Validate function type parameter default order (#25981)

... (truncated)

Changelog

Sourced from ruff's changelog.

0.15.18

Released on 2026-06-18.

Preview features

• Handle nested ruff:ignore comments (#25791)
• Stop displaying severity in output (#26050)
• Use human-readable names in CLI output (#25937)
• Use human-readable names in LSP and playground diagnostics (#26058)
• [pydocstyle] Prevent property docstrings starting with verbs (D421) (#23775)
• [flake8-pyi] Extend PYI033 to Python files (#26129)

Bug fixes

• Detect equivalent numeric mapping keys (#26009)
• Detect mapping keys equivalent to booleans (#25982)
• Detect repeated signed and complex dictionary keys (#26007)

Rule changes

• [flake8-pyi] Rename PYI033 to legacy-type-comment (#26131)

Performance

• Use ThinVec for call keywords (#25999)
• Inline parser recovery context checks (#26038)
• Match parser keywords as bytes (#26037)
• Move value parsing out of lexing (#25360)

Server

• Render subdiagnostics and secondary annotations as related information (#26011)

Documentation

• Update fix availability for always-fixable rules (#26091)
• [flake8-tidy-imports] Add fix safety section (TID252) (#17491)

Parser

• Reject __debug__ lambda parameters (#26022)
• Reject _ as a match-pattern target (#25977)
• Reject multiple starred names in sequence patterns (#25976)
• Reject parenthesized star imports (#26021)
• Reject starred comprehension targets (#26023)
• Reject unparenthesized generator expressions in class bases (#25978)
• Reject yield expressions after commas (#26024)
• Validate function type parameter default order (#25981)

... (truncated)

Commits

• 6686f63 Bump 0.15.18 (#26135)
• efbb732 [ty] Suggest keyword-only arguments between variadic parameters (#26134)
• c256d5f [ty] Support Annotated[Any, ...] as a class base (#26133)
• 19a4bea [flake8-pyi] Rename PYI033 to legacy-type-comment (#26131)
• 1d9866c Bump ecosystem-analyzer commit (#26130)
• 8656c73 [ty] Compact indexed AST node storage (#25998)
• c17c8d9 [ty] Garbage-collect cached constraint sets (#26116)
• ef0fb8f [ty] Fix bound TypeVar default cycle recovery (#26124)
• b83c024 [flake8-pyi] Extend PYI033 to Python files in preview (#26129)
• e8a5e38 Update Rust crate zip to v8 (#26078)
• Additional commits viewable in compare view

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Project	Deployment	Actions	Updated (UTC)
just-hire-me	Ready	Preview, Comment	Jun 22, 2026 6:28am

[vasu-devs]

Superseded by #145 — all dependencies were brought to today's latest (2026-06-22) in one resolved update, now merged to main. This bump is included. Closing.

[dependabot]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version. You can also ignore all major, minor, or patch releases for a dependency by adding an ignore condition with the desired update_types to your config file.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.