Some deprecations in advance of Drupal 11

[rosiel]

GitHub Issue: Islandora/documentation#2318

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  Release pull requests, etc.)

What does this Pull Request do?

Removes deprecated code per the following:

• New API for defining Field Type categories
• EntityReferenceTestTrait has been renamed to EntityReferenceFieldCreationTrait
• and updating the cache action version in CI.

How should this be tested?

• Run tests locally (deprecation notices seem to be suppressed in CI). You shouldn't be able to track down these errors to issues in Islandora code (note that not all contrib modules have used the new API for defining field type categories so those may pop up but it seems it's not our fault.)

Documentation Status

• Does this change existing behaviour that's currently documented? no!
• Does this change require new pages or sections of documentation? no!
• Who does this need to be documented for? nobody!
• Associated documentation pull request(s): ___ or documentation issue ___

Additional Notes:

Any additional information that you think would be helpful when reviewing this
PR.

Interested parties

Tag (@ mention) interested parties or, if unsure, @Islandora/committers

Draft because there are a lot more problems when running tests locally.

[seth-shaw-asu]

The new Field Type API is 10.2+. The note appears to say we can add 10.1 support by adding a hook.

[rosiel]

Hmm. With 2 weeks till the release of 10.3, and the end of security support for 10.1.x, I think we should move toward declaring the module now requires 10.2 or greater. (If it makes people feel better, we could wait two weeks and then do this).

[rosiel]

add composer conflicts.

[jordandukart]

Rest here I think looks fine.