Update sbt, scripted-plugin to 1.12.9

[guizmaii]

About this PR

📦 Updates

• org.scala-sbt:sbt
• org.scala-sbt:scripted-plugin

from 1.12.7 to 1.12.9

📜 GitHub Release Notes - Version Diff

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^{labels: library-update, early-semver-patch, semver-spec-patch, version-scheme:early-semver, commit-count:1}

[Copilot]

Pull request overview

Updates the build toolchain to the latest sbt patch release, aligning the project’s build environment with sbt 1.12.9.

Changes:

• Bump sbt.version from 1.12.7 to 1.12.9.

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[Copilot]

PR description mentions updating org.scala-sbt:scripted-plugin to 1.12.9, but this repo doesn’t appear to reference scripted-plugin anywhere (only sbt.version was changed). If scripted-plugin is not actually used/pinned here, consider adjusting the PR description to avoid confusion; if it is used indirectly, consider adding/pointing to the place where it’s declared.