Upgrade SnakeYAML version for JTosca

Change-Id: Ia2d2910edf4c7646ee4da2b1d454604af273ceac
Issue-ID: SDC-234
Signed-off-by: Gitelman, Tal (tg851x) <tg851x@intl.att.com>
diff --git a/pom.xml b/pom.xml
index 403f6fe..f346b39 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
 		<dependency>
 			<groupId>org.yaml</groupId>
 			<artifactId>snakeyaml</artifactId>
-			<version>1.14</version>
+			<version>1.20</version>
 			<scope>compile</scope>
 		</dependency>