update dependencies; fix for coercion removal

opam

theories/lang/arc.v

theories/lifetime/lifetime.v

theories/lifetime/lifetime_sig.v

theories/lifetime/model/boxes.v

theories/lifetime/model/primitive.v

theories/typing/borrow.v

theories/typing/cont.v

theories/typing/function.v

theories/typing/int.v

theories/typing/own.v

theories/typing/programs.v

theories/typing/shr_bor.v

theories/typing/type.v

theories/typing/type_context.v

theories/typing/type_sum.v

theories/typing/uniq_bor.v