[client-python] chore(deps): update dependency isort to v8

Author: renovate[bot]

pyproject.toml

@@ -49,7 +49,7 @@ dependencies = [
 dev = [
     "black (>=25.11.0,<25.12.0)",
     "build (>=1.3.0,<1.4.0)",
-    "isort (>=6.1.0,<6.2.0)",
+    "isort (>=8.0.1,<8.1.0)",
     "types-pytz (>=2025.2.0.20250326,<2025.3.0.0)",
     "pre-commit (>=4.2.0,<4.3.0)",
     "types-python-dateutil (>=2.9.0,<2.10.0)",