revert to dxWDL 1.46.4. the older ones get OOM errors on downloading files...

Author: dpark01

travis/install-wdl.sh

@@ -19,7 +19,7 @@ cached_fetch_jar_from_github () {
 
 cached_fetch_jar_from_github broadinstitute cromwell womtool 49
 cached_fetch_jar_from_github broadinstitute cromwell cromwell 49
-cached_fetch_jar_from_github dnanexus dxWDL dxWDL v1.45
+cached_fetch_jar_from_github dnanexus dxWDL dxWDL v1.46.4
 
 TGZ=dx-toolkit-v0.293.0-ubuntu-16.04-amd64.tar.gz
 if [ ! -f $CACHE_DIR/$TGZ ]; then