Update sbt to 1.9.9

scala-steward · xuwei-k · commit 929dc8a9c24f · 2024-02-24T10:10:59.000+09:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.8
+sbt.version=1.9.9
