DataCite Xml updates- 4.7, language, Translator, Keyword URI, etc.

[qqmyers]

What this PR does / why we need it: This PR updates the citation block contributor types to add 'Translator' and makes a few small updates to the DataCite XML export/xml metadata sent to DataCite:

• updates the schema compliance to version 4.7
• adds 'Translator' as an allowed contributor type (Dataverse has a 'Translator' option but in DataCite 4.5, 'Translator' is not allowed and the xml mapped it to 'Other' instead)
• adds a language element for the case where the dataset has one citation metadatablock: language defined. In other cases, the language element is not included (as before).
• adds the value of any keywordTermURI value as the valueURI attribute in the resulting element
• accept dates of the form YYYY or YYYY-MM in the timePeriodCovered and dateOfCollection fields, and
• avoids sending the word 'null' as part of a date range when the start or end date is unspecified.

Which issue(s) this PR closes:

• Closes #

Special notes for your reviewer: Note the timePeriodCovered and dateOfCollection fields show a placeholder with YYYY-MM-DD but in practice many people are using shorter year or year and month entries. These were not being sent to DataCite (as of ~2024 when validation was added). Not sure if it is worth changing the placeholder or not.

Suggestions on how to test this: The individual changes listed above should all be easy to test by filling in the relevant metadata. The XML produced should be visible on Fabrica or via API to get the DataCite XML export, or one could publish and see the export in the UI.

Does this PR introduce a user interface change? If mockups are available, please link/include them here:

Is there a release notes update needed for this change?:

Additional documentation:

[jggautier]

adds 'Translator' as an allowed contributor type (Dataverse has a 'Translator' option but in DataCite 4.5, 'Translator' is not allowed and the xml mapped it to 'Other' instead)

Could you write more about how Dataverse has a 'Translator' option? Or how do we expect someone depositing a dataset in a Dataverse repository to indicate that someone contributed as a translator? I ask because I don't see "Translator" in the deposit form's Contributor Type dropdown on Demo Dataverse or in the list of contributor types in the citation.tsv and citation.properties file that ships with Dataverse.

I do see it in the citation metadata block that QDR is using, at https://data.qdr.syr.edu/api/metadatablocks/citation.

Do you know yet if you're planning to merge this PR for the 6.11 release?

I ask because in #12281 we're tracking other changes we're planning to make to the information that Dataverse includes in the DataCite XML export. That GitHub issue has a milestone label for 6.11, although we're not sure yet if we'll be able to finish it for the 6.11 release.

[qqmyers]

Since Translator wasn't yet in the citation block, I've added it in the PR. When/if this gets merged is not my call. (As QDR is already deploying these changes, the priority should be based on whether Harvard or other GDCC members want it.)