chore(pre-commit.ci): auto fixes

Author: pre-commit-ci[bot]

tests/test_sync.py

@@ -1434,7 +1434,7 @@ def read_data(expected):
             calls += 1
             if calls == 1:
                 self.assertEqual(expected, 2)
-                return bytearray(b"\x81\xB6")  # Model 0xB6
+                return bytearray(b"\x81\xb6")  # Model 0xB6
             if calls == 2:
                 # Standard state response for initial setup (protocol determination)
                 self.assertEqual(expected, 12)