Merge upstream into catalyst stable

[ScottVerbeek]

Pull in all changes made in upstream into catalyst stable. There were two conflicts.

1. .github/workflows/moodle-ci.yml: Accepted incoming upstreams changes. They had newer code, allowing testing of 8.0 and MOODLE_402_STABLE branches.
2. tests/fixtures/test_base.php: Marked these changes, saw no difference so accepted incoming.

<<<<<<< HEAD
                $fixedbase = sprintf("%.${decimals}E", (float)$matches[0]);
=======
                $fixedbase = sprintf("%.{$decimals}E", (float)$matches[0]);
>>>>>>> upstream/master  

[golenkovm]

Hey @ScottVerbeek thanks heaps for raising this. The change is massive and I couldn't find any evidence that it was tested somewhere. I am doing an upgrade for one of our clients that will be on php8.1 and need some of these fixes. I will point their codebase to your source branch and send it to QA. If nothing comes back could go ahead and merge it. I assume the testing might take a month or something.

Cheers,
Misha

[jwcatau]

Hi @ScottVerbeek and @golenkovm
Likewise, thanks for this. We'll be doing the same thing with QA on this and look to support this merge with any updates from testing.
Regards,
James.

[golenkovm]

We had a couple of Production sites on the source branch for a while. Happy to have this merged 👍