CI times out on satackey/action-docker-layer-caching step

[RyanGlScott]

Recently, CI builds of saw-script (both PRs and nightly builds) are consistently timing out on the satackey/action-docker-layer-caching step, even for normally quick-running jobs such as the drbg job (example). While I am unclear on the exact cause of this, I do note that this action is deprecated and unmaintained, and modern development appears to have switched over to this fork. As a first step, we should switch over to the modern fork to see if that resolves the issue.

[RyanGlScott]

Fixed in #1835.

[RyanGlScott]

Sadly, even the newly forked version still appears to time out, and it has been doing so consistently as of the last week or so. See this workflow, for example, where all of the Docker-related jobs time out on the action-docker-layer-caching step. Unfortunately, I'm really not sure what to do about this, as I'm unclear if there is an alternative that works reliably. We may just have to disable Docker layer caching altogether.