Update sbt to 1.3.4 (#87)

scala-steward · raboof · commit 04bd6274bf0f · 2019-11-25T09:20:48.000+01:00
diff --git a/project/build.properties b/project/build.properties
@@ -1 +1 @@
-sbt.version=1.3.3
+sbt.version=1.3.4
