yaml updater removes quotes from strings

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Hello,

I'm using release-please through the Github Action. But the issue I'm having comes from this package I think.

I'm using the yaml updater to update a version in a yaml file. But release please modifies more than just the version. It removes all the single quotes around strings and converts the text to `>-` syntax.

The issue is probably coming from `js-yaml` package. But I could not reproduce it manually. I'm using the latest release please GA which in turn should use `js-yaml` version 4 where there should be quotes around strings all the time. I believe only in version 3 there were no quotes.

Does anyone have any idea?