build(deps-dev): bump mypy from 1.20.1 to 1.20.2 in /stash

Bumps [mypy](https://github.com/python/mypy) from 1.20.1 to 1.20.2.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.20.1...v1.20.2)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 1.20.2
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

stash/pyproject.toml

@@ -56,7 +56,7 @@ dependencies = []
 [dependency-groups]
 dev = [
     "ruff>=0.15.11",
-    "mypy>=1.20.1",
+    "mypy>=1.20.2",
     "pytest>=8",
 ]