Update tensorflow to resolve its conflict with protobuf

Signed-off-by: Jeffrey Wang <jeffreywang@anyscale.com>

Author: jeffreywang-anyscale

python/requirements/ml/dl-cpu-requirements.txt

@@ -1,8 +1,8 @@
 # These requirements are used for the CI and CPU-only Docker images so we install CPU only versions of torch.
 # For GPU Docker images, you should install dl-gpu-requirements.txt afterwards.
 
-tensorflow==2.15.1; python_version < '3.12' and (sys_platform != 'darwin' or platform_machine != 'arm64')
-tensorflow-macos==2.15.1; python_version < '3.12' and sys_platform == 'darwin' and platform_machine == 'arm64'
+tensorflow==2.20.0; python_version < '3.12' and (sys_platform != 'darwin' or platform_machine != 'arm64')
+tensorflow-macos==2.20.0; python_version < '3.12' and sys_platform == 'darwin' and platform_machine == 'arm64'
 tensorflow-probability==0.23.0; python_version < '3.12'
 tensorflow-io-gcs-filesystem==0.31.0; python_version < '3.12'
 tensorflow-datasets; python_version < '3.12'

python/requirements/ml/dl-gpu-requirements.txt

@@ -1,7 +1,7 @@
 # If you make changes below this line, please also make the corresponding changes to `dl-cpu-requirements.txt`!
 
-tensorflow==2.15.1; python_version < '3.12' and (sys_platform != 'darwin' or platform_machine != 'arm64')
-tensorflow-macos==2.15.1; python_version < '3.12' and sys_platform == 'darwin' and platform_machine == 'arm64'
+tensorflow==2.20.0; python_version < '3.12' and (sys_platform != 'darwin' or platform_machine != 'arm64')
+tensorflow-macos==2.20.0; python_version < '3.12' and sys_platform == 'darwin' and platform_machine == 'arm64'
 tensorflow-probability==0.23.0; python_version < '3.12'
 tensorflow-datasets; python_version < '3.12'