[client-python] chore(deps): update dependency black to >=26.5.0,<26.6.0

Author: renovate[bot]

pyproject.toml

@@ -47,7 +47,7 @@ dependencies = [
 
 [project.optional-dependencies]
 dev = [
-    "black (>=26.3.1,<26.4.0)",
+    "black (>=26.5.0,<26.6.0)",
     "build (>=1.4.4,<1.5.0)",
     "isort (>=8.0.1,<8.1.0)",
     "types-pytz (>=2025.2.0.20250326,<2025.3.0.0)",