Update embedded-kafka from 2.8.1 to 3.0.0

[disco-scala-steward]

Updates io.github.embeddedkafka:embedded-kafka from 2.8.1 to 3.0.0.
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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Files still referring to the old version number

The following files still refer to the old version number (2.8.1).
You might want to review and update them manually.

project/Dependencies.scala

Ignore future updates

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

updates.ignore = [ { groupId = "io.github.embeddedkafka", artifactId = "embedded-kafka" } ]

labels: test-library-update, early-semver-major, semver-spec-major, old-version-remains, commit-count:1