Update dev_5_0 submodules

Repository: openmicroscopy/openmicroscopy
Already up-to-date.

Repository: openmicroscopy/bioformats
Updating ef5abfd..786e6c2
Merged PRs (fast-forward):
  # PR 903 melissalinkert 'Fix upgrade checker to delete loci_tools.jar when appropriate'
  # PR 908 joshmoore 'Flatten path to bioformats_package.jar in bftools.zip (see gh-901)'
  # PR 900 hflynn '11955 further docs fixes'
  # PR 905 melissalinkert 'Revert "Update POM version numbers to 5.0.0-rc2"'
  # PR 912 joshmoore 'Fix logback.xml XML header'

Repository: ome/scripts
Already up-to-date.

Repository: openmicroscopy/ome-documentation
Updating 0b186c0..d919d72
Merged PRs (fast-forward):
  # PR 661 manics 'Windows 64-bit python 11899'
  # PR 653 sbesson 'Update documentation to use Pillow instead of PIL'
  # PR 640 ximenesuk 'Update docs for import and logging fixes'
  # PR 658 sbesson 'Improve server-template description in advanced configuration (rebased onto develop) (rebased onto dev_5_0)'

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