⬆️ Update dependency mypy to v1.20.2 (#794)

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

Author: renovate[bot]

poetry.lock

@@ -36,7 +36,7 @@ aiohttp = "<3.14"  # aioresponses 0.7.8 incompatible with aiohttp 3.14
 codespell = "2.4.2"
 covdefaults = "2.3.0"
 coverage = {version = "7.14.3", extras = ["toml"]}
-mypy = "1.19.1"
+mypy = "1.20.2"
 prek = "0.3.9"
 pre-commit-hooks = "6.0.0"
 pylint = "4.0.6"