bump version to 6.0

[pdurbin]

What this PR does / why we need it:

Typical bump of version per https://guides.dataverse.org/en/5.14/developers/making-releases.html#bump-version-numbers

Which issue(s) this PR closes:

• Closes Payara 6: Bump release version in code #9861

[kcondon]

This looks good to me.

[pdurbin]

https://jenkins.dataverse.org/job/IQSS-Dataverse-Develop-PR/job/PR-9893/1/consoleFull is failing with this error:

TASK [dataverse : copy warfile over release] ***********************************
fatal: [localhost]: FAILED! => {"changed": false, "msg": "Source /tmp/dataverse/target/dataverse-5.14.war not found"}

This is expected until we bump the version in Jenkins. This is noted here: https://guides.dataverse.org/en/5.14/developers/making-releases.html#check-in-the-changes-above-into-a-release-branch-and-merge-it

"Either way, as usual, you should ensure that all tests are passing. Please note that you will need to bump the version in jenkins.yml in dataverse-ansible to get the tests to pass. Consider doing this before making the pull request. Alternatively, you can bump jenkins.yml after making the pull request and re-run the Jenkins job to make sure tests pass."

[github-actions]

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ghcr.io/gdcc/dataverse:9861-bump-to-6.0

ghcr.io/gdcc/configbaker:9861-bump-to-6.0

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