Update sbt, scripted-plugin to 1.12.0 (#916)

Co-authored-by: scala-steward-asf[bot] <147768647+scala-steward-asf[bot]@users.noreply.github.com>

Author: scala-steward-asf[bot]

project/build.properties

@@ -1 +1 @@
-sbt.version=1.11.7
+sbt.version=1.12.0