Update sbt to 1.9.0 (#376)

scala-steward · web-flow · commit bd1960e33466 · 2023-06-05T10:37:27.000+02:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.8.3
+sbt.version=1.9.0
