Templates: Allow unicode keys in the lookup dictionary.
Templates: Allow unicode keys in the lookup dictionary.

This is irrelevant for now, as there is no mechanism to insert a unicode key,
but this future proofs us against changes that support unicode filenames and
connector names.

smaccm/camkes-tool,smaccm/camkes-tool,agacek/camkes-tool,smaccm/camkes-tool,agacek/camkes-tool,smaccm/camkes-tool,agacek/camkes-tool