Resolves tdf#132701 - macOS installer image must be 72dpi

See also 12b389e838743dec662c70c4772553a96ad4f9ac

Change-Id: Ib46cd37e29beac4c18b2f9ce5a74b01f6c357cbe
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/93500
Tested-by: Jenkins
Reviewed-by: Heiko Tietze <heiko.tietze@documentfoundation.org>
diff --git a/setup_native/source/packinfo/osxdndinstall.png b/setup_native/source/packinfo/osxdndinstall.png
index bab0797..b31d1b5 100644
--- a/setup_native/source/packinfo/osxdndinstall.png
+++ b/setup_native/source/packinfo/osxdndinstall.png
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