Merge pull request #89 from scala-steward/update/sbt-1.3.9

mergify[bot] · web-flow · commit 62bbd53b26cc · 2020-03-31T18:14:47.000Z
Update sbt to 1.3.9
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.8
+sbt.version=1.3.9
