Upgrade grpcio version to address the security concern reported by Cycode

Author: maryamziaa

ml-agents-envs/setup.py

@@ -54,7 +54,7 @@ def run(self):
     zip_safe=False,
     install_requires=[
         "cloudpickle",
-        "grpcio>=1.11.0,<=1.51.3",
+        "grpcio>=1.11.0,<=1.53",
         "Pillow>=4.2.1",
         "protobuf>=3.6,<3.21",
         "pyyaml>=3.1.0",

ml-agents/setup.py

@@ -55,7 +55,7 @@ def run(self):
     zip_safe=False,
     install_requires=[
         # Test-only dependencies should go in test_requirements.txt, not here.
-        "grpcio>=1.11.0,<=1.51.3",
+        "grpcio>=1.11.0,<=1.53",
         "h5py>=2.9.0",
         f"mlagents_envs=={VERSION}",
         "numpy>=1.23.5,<1.24.0",