change the type hint to pass the test in python 3.9

examples/analog_hamiltonian_simulation/09_Noisy_quantum_dynamics_for_Rydberg_atom_arrays.ipynb

@@ -1415,11 +1415,12 @@
     "from copy import deepcopy\n",
     "from decimal import Decimal\n",
     "from braket.device_schema.quera.quera_ahs_paradigm_properties_v1 import RabiCorrection\n",
+    "from typing import Union\n",
     "\n",
     "def customize_performance_for_field(\n",
     "    performance: Performance,\n",
     "    name: str,\n",
-    "    value: float | list[tuple[float, float]],\n",
+    "    value: Union[float, list[tuple[float, float]]],\n",
     "    modification_type: str = \"replace\"\n",
     ") -> Performance:\n",
     "    \"\"\"\n",
@@ -1428,7 +1429,7 @@
     "    Args:\n",
     "        performance (Performance): The given noise model\n",
     "        name (str): The name of the field to be modified\n",
-    "        value (float | list[tuple[float, float]]): The updated values for the modified field\n",
+    "        value (Union[float, list[tuple[float, float]]]): The updated values for the modified field\n",
     "        modification_type (str): The behavior of the customization. \n",
     "            If set to \"replace\", the value of the corresponding field will be updated\n",
     "            If set to \"keep_only\", the value of the corresponding field will be updated, and\n",