Rails YML string values casted to integer or boolean

[j15e]

Some strings that are a boolean or integer are not exported as string with the rails YML exporter.

# Before sync
key_one: "true"
key_two: "123456"

# After sync
key_one: true
key_two: 123456

I found the underlying issue seems to be that fast_yaml lib isn't providing encoding options and that problem was already reported by @simonprev (processone/fast_yaml#2).

I created this issue so others don't need to dig that problem again eheh.

[simonprev]

Since the fast_yaml is not working on my M1 machine, we are currently only supporting the existing implementation and not fixing/adding features to the YAML format 😢