Update dependency mypy to v1.20.2 (#312)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

requirements-mypy.txt

@@ -1,4 +1,4 @@
-mypy==1.19.1
+mypy==1.20.2
 pytest
 types-freezegun
 types-setuptools