Update sbt to 1.9.6

scala-steward · xuwei-k · commit 050ef4ad118f · 2023-09-19T07:27:07.000+09:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.4
+sbt.version=1.9.6
