feat: update deps, local-only skate

[caarlos0]

No description provided.

[meowgorithm]

Do we still need the Dockerfile?

[caarlos0]

migration script, assuming the previous version of skate available as ./old-skate:

#!/bin/bash
./old-skate list-dbs | while read -r db; do
  ./old-skate list -k "$db" | while read -r key; do
    ./old-skate get "$key$db" | skate set "$key$db"
  done
done