Various library updates

[nicolaspayette]

Just as a matter of good hygiene. Most of these only required bumping up the versions numbers.

Two slightly more consequential ones:

• The Gradle update required to explicitly specify the duplicates handling strategy for every task where it applies.
• The SnakeYAML update introduced a change in Representer.getProperties, which doesn't throw a checked IntrospectionException anymore. We were only wrapping these in unchecked YAMLException anyway, so there should be no change in control flow. The diffs look big, but it's only really changes in indentation after removing the try blocks.

[CarrKnight]

@nicolaspayette what happened?

I didn't want to pull in changes before running all the Indo/rejection stuff just to be safe.

[nicolaspayette]

I'm about to send open a "proper" pull request with the up to date tuna stuff, and the library changes are integrated in it, so there was no need to keep a separate PR open for it. But we can still have the library updates separate if you prefer (just let me know). No rush to merge anything anyway.