Update guava to 30.1.1-jre

[scala-steward]

Updates com.google.guava:guava from 28.2-jre to 30.1.1-jre.

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 = "com.google.guava", artifactId = "guava" } ]

labels: library-update