Update hardcoded WIN-CUDA from 11.1 with 11.3 (#5451)

Also, remove reference to conda-forge, all CUDA toolchain should be
available from NVIDIA channel

Install h5py from pip on Windows and skip failing gaussian_blur tests if Win+CUDA11.3 is used

.circleci/config.yml

@@ -848,7 +848,7 @@ jobs:
     executor:
       name: windows-gpu
     environment:
-      CUDA_VERSION: "11.1"
+      CUDA_VERSION: "11.3"
       PYTHON_VERSION: << parameters.python_version >>
     steps:
       - checkout

.circleci/config.yml.in

@@ -848,7 +848,7 @@ jobs:
     executor:
       name: windows-gpu
     environment:
-      CUDA_VERSION: "11.1"
+      CUDA_VERSION: "11.3"
       PYTHON_VERSION: << parameters.python_version >>
     steps:
       - checkout

.circleci/unittest/windows/scripts/environment.yml

@@ -9,10 +9,11 @@ dependencies:
   - libpng
   - jpeg
   - ca-certificates
-  - h5py
+  - hdf5
   - pip:
     - future
     - pillow >=5.3.0, !=8.3.*
     - scipy
     - av
     - dataclasses
+    - h5py

.circleci/unittest/windows/scripts/install.sh

@@ -28,7 +28,7 @@ else
 fi
 
 printf "Installing PyTorch with %s\n" "${cudatoolkit}"
-conda install -y -c "pytorch-${UPLOAD_CHANNEL}" -c conda-forge "pytorch-${UPLOAD_CHANNEL}"::pytorch[build="*${version}*"] "${cudatoolkit}" pytest
+conda install -y -c "pytorch-${UPLOAD_CHANNEL}" -c nvidia "pytorch-${UPLOAD_CHANNEL}"::pytorch[build="*${version}*"] "${cudatoolkit}" pytest
 
 torch_cuda=$(python -c "import torch; print(torch.cuda.is_available())")
 echo torch.cuda.is_available is $torch_cuda

test/test_transforms_tensor.py

 import os
+import sys
 
 import numpy as np
 import pytest
@@ -958,6 +959,17 @@ def test_random_apply(device):
 )
 @pytest.mark.parametrize("channels", [1, 3])
 def test_gaussian_blur(device, channels, meth_kwargs):
+    if all(
+        [
+            device == "cuda",
+            channels == 1,
+            meth_kwargs["kernel_size"] in [23, [23]],
+            torch.version.cuda == "11.3",
+            sys.platform in ("win32", "cygwin"),
+        ]
+    ):
+        pytest.skip("Fails on Windows, see https://github.com/pytorch/vision/issues/5464")
+
     tol = 1.0 + 1e-10
     torch.manual_seed(12)
     _test_class_op(