chore(deps-dev): Bump mypy-strict-kwargs from 2026.1.12 to 2026.5.20.1

Bumps [mypy-strict-kwargs](https://github.com/adamtheturtle/mypy-strict-kwargs) from 2026.1.12 to 2026.5.20.1.
- [Release notes](https://github.com/adamtheturtle/mypy-strict-kwargs/releases)
- [Changelog](https://github.com/adamtheturtle/mypy-strict-kwargs/blob/main/CHANGELOG.rst)
- [Commits](adamtheturtle/mypy-strict-kwargs@2026.01.12...2026.05.20.1)

---
updated-dependencies:
- dependency-name: mypy-strict-kwargs
  dependency-version: 2026.5.20.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -65,7 +65,7 @@ optional-dependencies.dev = [
     "furo==2025.12.19",
     "interrogate==1.7.0",
     "mypy[faster-cache]==2.1.0",
-    "mypy-strict-kwargs==2026.1.12",
+    "mypy-strict-kwargs==2026.5.20.1",
     "prek==0.4.1",
     "pydocstringformatter==0.7.5",
     "pydocstyle==6.3",