Tests

Merge pull request #11110 from JabRef/contentSelectorDefautlSaving #520

Job	Run time
CHANGELOG.md - only unreleased touched	17s
CHANGELOG.md	9s
Checkstyle	2m 34s
Code coverage	40s
Database tests	2m 51s
Validate Gradle Wrapper	7s
GUI tests	2m 26s
Markdown	8s
Find merge conflicts	8s
Modernizer	1m 49s
OpenRewrite	2m 29s
Unit tests	6m 59s
	20m 37s

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