build(deps): bump mypy from 1.20.2 to 2.0.0

Bumps [mypy](https://github.com/python/mypy) from 1.20.2 to 2.0.0.
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.20.2...v2.0.0)

---
updated-dependencies:
- dependency-name: mypy
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

mypy-requirements.txt

@@ -1,4 +1,4 @@
-mypy==1.20.2  # also update pyproject.toml
+mypy==2.0.0  # also update pyproject.toml
 ruamel.yaml>=0.16.0,<0.20
 cwl-utils>=0.41
 cwltest

pyproject.toml

@@ -2,7 +2,7 @@
 requires = [
     "setuptools>=45",
     "setuptools_scm[simple]>=8.0.4,<11",
-    "mypy==1.20.2",  # also update mypy-requirements.txt
+    "mypy==2.0.0",  # also update mypy-requirements.txt
     "types-requests",
     "types-psutil>=7.1.3.20251210",
     "ruamel.yaml>=0.16.0,<0.20",