chore(deps-dev): bump ruff from 0.16.6 to 0.16.9 in the dev group across 1 directory

[dependabot]

Bumps the dev group with 1 update in the / directory: ruff.

Updates ruff from 0.16.6 to 0.16.9

Release notes

Sourced from ruff's releases.

0.16.9

Release Notes

Released on 2026-09-24.

Preview features

• [ruff] Avoid false positives for overloaded division (RUF069) (#28309)

Bug fixes

• [flake8-bugbear] Avoid false positives for calls with keyword arguments (B009, B010, B043) (#28776)
• [flake8-tidy-imports] Allow lazy imports to be used in deferred annotations (TID255) (#28767)

Rule changes

• Update LibCST-based fixes for Python 3.15 (#28616)
• [flake8-pyi] Mention stubs in the diagnostic message (PYI002) (#28542)

Documentation

• Fix horizontal overflow on the rules documentation page (#28699)
• Update rules table with category information (#28651)
• [flake8-annotations] Clarify that ANN401 checks return types in addition to arguments (#28334)
• [flake8-bugbear] Document type-checker interaction (B010) (#28509)
• [flake8-comprehensions] Document map/generator exception behavior (C417) (#27794)
• [ruff] Mention related isort settings (RUF022) (#28719)

Contributors

• @​qinpei-dev
• @​sanjayrohith
• @​ntBre
• @​webdevsamran
• @​zaniebot
• @​ewdurbin
• @​MichaReiser
• @​spaceone
• @​IbrahimKhan12
• @​devtechedge
• @​GruffElixir

Install ruff 0.16.9

Install prebuilt binaries via shell script

curl --proto '=https' --tlsv1.2 -LsSf https://releases.astral.sh/github/ruff/releases/download/0.16.9/ruff-installer.sh | sh

... (truncated)

Changelog

Sourced from ruff's changelog.

0.16.9

Released on 2026-09-24.

Preview features

• [ruff] Avoid false positives for overloaded division (RUF069) (#28309)

Bug fixes

• [flake8-bugbear] Avoid false positives for calls with keyword arguments (B009, B010, B043) (#28776)
• [flake8-tidy-imports] Allow lazy imports to be used in deferred annotations (TID255) (#28767)

Rule changes

• Update LibCST-based fixes for Python 3.15 (#28616)
• [flake8-pyi] Mention stubs in the diagnostic message (PYI002) (#28542)

Documentation

• Fix horizontal overflow on the rules documentation page (#28699)
• Update rules table with category information (#28651)
• [flake8-annotations] Clarify that ANN401 checks return types in addition to arguments (#28334)
• [flake8-bugbear] Document type-checker interaction (B010) (#28509)
• [flake8-comprehensions] Document map/generator exception behavior (C417) (#27794)
• [ruff] Mention related isort settings (RUF022) (#28719)

Contributors

• @​qinpei-dev
• @​sanjayrohith
• @​ntBre
• @​webdevsamran
• @​zaniebot
• @​ewdurbin
• @​MichaReiser
• @​spaceone
• @​IbrahimKhan12
• @​devtechedge
• @​GruffElixir

0.16.8

Released on 2026-09-16.

Bug fixes

• Visit functional TypedDict keyword arguments correctly (#28584)
• [flake8-simplify] Detect nested async with under sync parent (SIM117) (#27821)
• [flake8-simplify] Preserve operand order in SIM109 fix (#27824)

... (truncated)

Commits

• 0be08a2 Bump version to 0.16.9 (#28882)
• b4920b7 Rename ruff_cli to ruff_command_line (#28881)
• 47c751b Update dependency astral-sh/uv to v0.12.18 (#28880)
• 8c244e5 [flake8-comprehensions] Document map/generator exception behavior (C417...
• 5edf5a1 Use target form in rooster.version_files (#28876)
• 915bb2b [ty] Prefer existing @ paths over response files in Ruff and ty (#28877)
• 4710e1a ci(github): update version number in placeholder of issue template (#28871)
• eedfc62 [ty] Propagate outer type context through cast calls (#28855)
• ceaa6a0 [ty] Contain rendered code within Markdown fences (#28869)
• dba0f30 authorize ruff-pre-commit dispatch via OIDC (#28867)
• Additional commits viewable in compare view

[github-actions]

Cpp-Linter Report ⚠️

Some files did not pass the configured checks!

clang-format (v16.0.6) reports: 2 file(s) not formatted

• docs/examples/demo/demo.cpp
• docs/examples/demo/demo.hpp

clang-tidy (v16.0.6) reports: 7 concern(s)

• docs/examples/demo/demo.cpp:3:10: warning: [modernize-deprecated-headers]

  inclusion of deprecated C++ header 'stdio.h'; consider using 'cstdio' instead

  #include <stdio.h>
           ^~~~~~~~~
           <cstdio>

• docs/examples/demo/demo.cpp:8:5: warning: [modernize-use-trailing-return-type]

  use a trailing return type for this function

  int main(){
  ~~~ ^
  auto       -> int

• docs/examples/demo/demo.cpp:10:13: warning: [readability-braces-around-statements]

  statement should be inside braces

      for (;;) break;
              ^
               {

• docs/examples/demo/demo.cpp:13:5: warning: [cppcoreguidelines-pro-type-vararg]

  do not call c-style vararg functions

      printf("Hello world!\n");
      ^

• docs/examples/demo/demo.hpp:6:11: warning: [modernize-use-default-member-init]

  use default member initializer for 'useless'

      char* useless;
            ^
                   {"\0"}

• docs/examples/demo/demo.hpp:7:9: warning: [modernize-use-default-member-init]

  use default member initializer for 'numb'

      int numb;
          ^
              {0}

• docs/examples/demo/demo.hpp:11:11: warning: [modernize-use-trailing-return-type]

  use a trailing return type for this function

      void *not_useful(char *str){useless = str;}
      ~~~~~~^
      auto                        -> void *

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