Update to sphixntheme0.4.6 (#3795)

Update to sphinx theme 0.4.5 to get access to banners

Author: sekyondaMeta

.ci/docker/requirements.txt

@@ -16,7 +16,7 @@ pandocfilters==1.5.1
 markdown==3.8.2
 
 # PyTorch Theme
-pytorch_sphinx_theme2==0.4.4
+pytorch_sphinx_theme2==0.4.6
 
 # Tutorial dependencies
 tqdm==4.66.1
@@ -52,7 +52,9 @@ onnxscript>=0.6.2
 onnxruntime
 evaluate
 accelerate>=0.20.1
-git+https://github.com/facebookresearch/mosaic.git
+# Pinned to commit before click>=8.3.0 was added, which conflicts with ray's click!=8.3.* requirement.
+# TODO: Revert to `git+https://github.com/facebookresearch/mosaic.git` when ray or click versions are updated.
+git+https://github.com/facebookresearch/mosaic.git@8f1444f
 altair
 omegaconf