Update sbt to 1.9.9 in series/6.2.x

argonaut-bot[bot] · xuwei-k · commit 8187ce1df476 · 2024-02-24T09:32:36.000+09:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.9.8
+sbt.version=1.9.9
