debugging docker merge/pull/push and updating the '@ v#' versions within .github/workflows/* as some of them had gotten old / stale (see screenshot below)

stage speedups! vs other PRs in queue

• doxygen: {before: 3 min 47 sec, now: 44 sec}
• docker pull_request / docker-build {before: 4 min 1 sec, now: 3 min 24 sec}
• CI / Build Release Candidate {before: 5 min 24 sec, now: 5 min 4 sec}
• CI / Unit and Integration Tests {before: 17 min 14 sec, now: 15 min 59 sec}
• CI / Lint {before: 21 min 33 sec, now: 20 min 36 sec}