Update sbt-ci-release to 1.5.7

[scalameta-bot]

Updates com.geirsson:sbt-ci-release from 1.5.6 to 1.5.7.

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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Ignore future updates

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

updates.ignore = [ { groupId = "com.geirsson", artifactId = "sbt-ci-release" } ]

labels: sbt-plugin-update, early-semver-patch, semver-spec-patch, commit-count:1

[ckipp01]

Looks like there is a conflict with new sbt versions as we support super old versions here. I'll hunt down what we need to support to see if we actually need to support as old as we do.