Update conda docker images

Author: akihironitta

.github/workflows/cicd-pytorch_dockers.yml

@@ -129,10 +129,7 @@ jobs:
           - {python_version: "3.8", pytorch_version: "1.9", cuda_version: "11.1.1"}
           - {python_version: "3.8", pytorch_version: "1.10", cuda_version: "11.1.1"}
           - {python_version: "3.9", pytorch_version: "1.11", cuda_version: "11.3.1"}
-          - {python_version: "3.10", pytorch_version: "1.11", cuda_version: "11.3.1"}
-          - {python_version: "3.10", pytorch_version: "1.12", cuda_version: "11.6.0"}
-          #  nightly: add when there's a release candidate
-          #  - {python_version: "3.9", pytorch_version: "1.12"}
+          - {python_version: "3.10", pytorch_version: "1.12", cuda_version: "11.3.1"}
     steps:
       - uses: actions/checkout@v2
       - uses: docker/setup-buildx-action@v2