Update sbt to 1.9.1

scala-steward · xuwei-k · commit 2960244a8560 · 2023-07-03T08:05:15.000+09:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.0
+sbt.version=1.9.1
