Update sbt to 1.3.7 (#114)

scala-steward · raboof · commit 25f42c083104 · 2020-01-16T13:57:28.000+01:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.6
+sbt.version=1.3.7
