Update to Docker client v20.10.2

What does this MR do?

This merge requests updates the Docker engine client to the latest stable version, v20.10.2.

Why was this MR needed?

This was split out from !1955 (merged) to support device requests to allocate GPUs.

Testing

I ran basic smoke tests with:

1. Kubernetes executor (Linux)
2. Docker executor (Windows + Linux)
3. Shell executor (Windows + Linux)

Everything seems to work fine, but I'm not sure if this breaks any custom options that are being used with the Docker executor.