/usr/share/vala/vapi/folks-eds.deps is in libfolks-eds-dev 0.6.8-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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glib-2.0 gobject-2.0 folks libebook-1.2 libedataserver-1.2 gee-1.0