Update sbt to 1.3.13

scala-steward · scala-steward · commit b0e6cb15d3ab · 2020-06-28T02:25:01.000+02:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.12
+sbt.version=1.3.13
