Remove maximum Python version requirement for dm_control.

Fixes #303.

PiperOrigin-RevId: 449711039
Change-Id: Ibc1f3173029d248374a58222ec2d1c0e5212eeee

Author: saran-t

setup.py

@@ -194,7 +194,7 @@ def is_excluded(s):
         'License :: OSI Approved :: Apache Software License',
     ],
     keywords='machine learning control physics MuJoCo AI',
-    python_requires='>=3.7, <=3.10',
+    python_requires='>=3.7',
     install_requires=[
         'absl-py>=0.7.0',
         'dm-env',