Update json4s-native to 4.0.3

[scala-steward]

Updates org.json4s:json4s-native from 4.0.1 to 4.0.3. GitHub Release Notes - Version Diff

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

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Ignore future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "org.json4s", artifactId = "json4s-native" } ]

labels: library-update, semver-patch