* upstream/main: (78 commits)
  use optional
  remove empty lines and logger
  Simplify code, add test
  Show error only if user selected to store files in main directory
  Bump pascalgn/automerge-action from 0.15.5 to 0.15.6
  Update Gradle Wrapper from 7.6 to 8.0.1.
  add missing newlines at the end
  import strings and add them to the new bibdatabase Add test
  Resolve strings in MsOffice export
  Checkstyle
  Update CHANGELOG.md
  Refine error message and remove obsolete string
  Squashed 'buildres/csl/csl-styles/' changes from b111f31efe..9926b48cf3
  Fix storing multiline properties for custom fields in custom entry types
  Remove myself from MAINTAINERS (JabRef#9617)
  Fixed various fetcher tests (JabRef#9618)
  Fixed the performSearch Function
  Fix command line export for --exportMatches (JabRef#9610)
  Bump org.apache.commons:commons-csv from 1.9.0 to 1.10.0 (JabRef#9612)
  fix imports
  ...

# Conflicts:
#	CHANGELOG.md