/usr/share/vala/vapi/libedataserver-1.2.deps is in libedataserver1.2-dev 3.28.1-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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camel-1.2 libxml-2.0 gio-2.0 libsoup-2.4 posix