Upgrade Guava dependency due to CVE-2018-10237

Change-Id: I06d994131620e40065c3357485f6d536aa1e4170
diff --git a/Changes b/Changes
index b8d9415..a09dc54 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,6 @@
-0.36 2020-01-21
+0.36 2020-06-16
+    - [security] Upgraded version of Google Guava
+      (CVE-2018-10237; diewald)
 
 0.35 2019-11-12
     - Added a method to add warnings in QuerySerializer (margaretha)
diff --git a/pom.xml b/pom.xml
index d2dc4c3..04f8b94 100644
--- a/pom.xml
+++ b/pom.xml
@@ -74,7 +74,7 @@
 		<dependency>
 			<groupId>com.google.guava</groupId>
 			<artifactId>guava</artifactId>
-			<version>15.0</version>
+			<version>[29.0-jre,)</version>
 		</dependency>
 		<dependency>
 			<groupId>com.fasterxml.jackson.core</groupId>