Update sbt to 1.3.13 (#223)

scala-steward · web-flow · commit 2bd1024368db · 2020-07-03T16:12:36.000-03:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.2
+sbt.version=1.3.13
