Fix: Pin the version of warp in dev dependencies
Fix: Pin the version of warp in dev dependencies

Because newest version updates one of its dependencies which then uses
const generics, which we do not support on our MSRV.

Signed-off-by: Matthias Beyer <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@beyermatthias.de>

mehcode/config-rs