chore(deps): update dependency mypy to >=1.20.2,<1.21

Author: descope[bot]

pyproject.toml

@@ -51,7 +51,7 @@ types = [
     # The `<1.12` upper bound on the 3.9 entry is REQUIRED — without it renovate
     # bumps the pin past 1.12 (e.g. to 2.x) and produces an unsatisfiable lock. Keep it.
     "mypy>=1.20.1; python_version >= '3.10'",
-    "mypy>=1.11.2,<1.12; python_version < '3.10'",
+    "mypy>=1.20.2,<1.21; python_version < '3.10'",
 ]
 tests = [
     # pytest 9 requires Python 3.10+; on 3.9 we stay on the last 8.x line.