GitHub Actions Linux build fixes

[tuffnatty]

• Due to Composite Actions using Node 20 don't work with CentOS 7 actions/runner#2906, we can no longer run the whole workflow job in our container. Fix this by running the container in the background using actionsh/docker-shell-action and then running only the relevant shell steps in the container.
• Update to the latest stable dependencies.
• Fix missing libtcl.
• Include qt5-qtwayland to fix AlmaLinux 9.3 segfaulting. Running with QT_QPA_PLATFORM=wayland still does not work properly, but XWayland fallback is working when QT_QPA_PLATFORM is not specified.

[tuffnatty]

@pawelsalawa As always, the Linux build runner workflow needs to be re-run manually.

[pawelsalawa]

Thanks! Done