Update dependency mypy to ~=1.20.0 (#85)

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

Author: renovate[bot]

requirements.txt

@@ -4,5 +4,5 @@ starlette~=1.0.0
 black~=26.3.1
 pylint~=4.0.2
 flake8~=7.3.0
-mypy~=1.19.0
+mypy~=1.20.0
 pillow~=12.2.0