Downgrade sbt to 1.9.9 because some dependencies other than Scalafix were compiled with Scala 2.13.14, so we can't bring in the backward-compatibility checks in sbt 1.10 yet

bpholt · bpholt · commit 533edb9fbeec · 2024-06-10T17:51:33.000-05:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.10.0
+sbt.version=1.9.9
