Bump iniconfig from 2.0.0 to 2.1.0

Bumps [iniconfig](https://github.com/pytest-dev/iniconfig) from 2.0.0 to 2.1.0.
- [Release notes](https://github.com/pytest-dev/iniconfig/releases)
- [Changelog](https://github.com/pytest-dev/iniconfig/blob/main/CHANGELOG)
- [Commits](pytest-dev/iniconfig@v2.0.0...v2.1.0)

---
updated-dependencies:
- dependency-name: iniconfig
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements-dev.txt

@@ -4,7 +4,7 @@ build==1.2.2.post1
 certifi==2025.1.31
 colorama==0.4.6
 flake8==7.1.2
-iniconfig==2.0.0
+iniconfig==2.1.0
 mccabe==0.7.0
 mypy==1.15.0
 mypy-extensions==1.0.0