Update kafka to 2.8.1

[scala-steward]

Updates org.apache.kafka:kafka from 2.7.1 to 2.8.1.

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

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention me in the comments below.

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Have a fantastic day writing Scala!

Ignore future updates

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

updates.ignore = [ { groupId = "org.apache.kafka", artifactId = "kafka" } ]

labels: library-update, semver-minor

[coveralls]

Pull Request Test Coverage Report for Build 1247067580

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.727%

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Totals
Change from base Build 1065263828:	0.0%
Covered Lines:	43
Relevant Lines:	44

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💛 - Coveralls