Bump mypy from 1.11.2 to 1.12.0

Bumps [mypy](https://github.com/python/mypy) from 1.11.2 to 1.12.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.11.2...v1.12.0)

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

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

mypy-requirements.txt

@@ -1,4 +1,4 @@
-mypy==1.11.2  # also update pyproject.toml
+mypy==1.12.0  # also update pyproject.toml
 ruamel.yaml>=0.16.0,<0.19
 cwl-utils>=0.32
 cwltest

pyproject.toml

@@ -2,7 +2,7 @@
 requires = [
     "setuptools>=45",
     "setuptools_scm[toml]>=8.0.4,<9",
-    "mypy==1.11.2",  # also update mypy-requirements.txt
+    "mypy==1.12.0",  # also update mypy-requirements.txt
     "types-requests",
     "types-psutil",
     "importlib_resources>=1.4;python_version<'3.9'",