⬆️ upgrade nix and other deps (#52)

Fixes build failures due to missing feature flags for the `nix` crate

Signed-off-by: Joe Runde <Joseph.Runde@ibm.com>
Signed-off-by: Joe Runde <joe@joerun.de>
Co-authored-by: Travis Johnson <tsjohnso@us.ibm.com>

Author: joerunde