xref cupy/cupy#9515

Fixes needed in cupy-release-tools:

• Update script to build cuda-runfile base Docker image (builder/base/cuda-runfile/build.sh)
• Bump base image used to build wheel to the image above (dist_config.py)
• Add the CUDA version to verification variant (dist_config.py)
• Update CUDA version check lambda for Windows (dist_config.py)
• Sync _flexci.ps1 from cupy/cupy repository.