infra: bump ruff from 0.5.7 to 0.6.1 in /dockerfile

Bumps [ruff](https://github.com/astral-sh/ruff) from 0.5.7 to 0.6.1.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@0.5.7...0.6.1)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

dockerfile/anaconda-ci/requirements.txt

@@ -19,7 +19,7 @@ pylint == 3.2.6
 astroid == 3.2.4
 
 # ruff for fast linting
-ruff == 0.5.7
+ruff == 0.6.1
 
 # vulture for dead code analysis
 vulture == 2.11