use updated docker on all and remove old execution checker

Author: mmcky

.github/workflows/cache.yml

@@ -7,7 +7,7 @@ jobs:
   cache:
     runs-on: quantecon-gpu-runner
     container:
-      image: ghcr.io/quantecon/lecture-python-container:cuda-12.6.0-anaconda-2024-06-py312
+      image: ghcr.io/quantecon/lecture-python-container:cuda-12.6.0-anaconda-2024-10-py312
       options: --gpus all
     steps:
       - uses: actions/checkout@v4

.github/workflows/execution.yml

@@ -8,7 +8,7 @@ jobs:
     if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags')
     runs-on: quantecon-gpu-runner
     container:
-      image: ghcr.io/quantecon/lecture-python-container:cuda-12.6.0-anaconda-2024-06-py312
+      image: ghcr.io/quantecon/lecture-python-container:cuda-12.6.0-anaconda-2024-10-py312
       options: --gpus all
     steps:
       - name: Checkout