guava update

bindings/java/ivy.xml

@@ -2,7 +2,7 @@
 	<info organisation="org.sleuthkit" module="datamodel"/>
 	<dependencies>
 		<dependency org="joda-time" name="joda-time" rev="2.4" />
-		<dependency org="com.google.guava" name="guava" rev="31.0.1-jre"/>
+		<dependency org="com.google.guava" name="guava" rev="31.1-jre"/>
 		<dependency org="org.apache.commons" name="commons-lang3" rev="3.0"/>
 		<dependency org="commons-validator" name="commons-validator" rev="1.6"/>
 		

bindings/java/nbproject/project.xml

@@ -114,7 +114,7 @@
         <java-data xmlns="http://www.netbeans.org/ns/freeform-project-java/4">
             <compilation-unit>
                 <package-root>src</package-root>
-                <classpath mode="compile">lib;lib/diffutils-1.2.1.jar;lib/junit-4.12.jar;lib/postgresql-42.2.18.jar;lib/c3p0-0.9.5.5.jar;lib/mchange-commons-java-0.2.20.jar;lib/joda-time-2.4.jar;lib/commons-lang3-3.0.jar;lib/guava-31.0.1-jre.jar;lib/SparseBitSet-1.1.jar;lib/gson-2.8.5.jar;lib/commons-validator-1.6.jar</classpath>
+                <classpath mode="compile">lib;lib/diffutils-1.2.1.jar;lib/junit-4.12.jar;lib/postgresql-42.2.18.jar;lib/c3p0-0.9.5.5.jar;lib/mchange-commons-java-0.2.20.jar;lib/joda-time-2.4.jar;lib/commons-lang3-3.0.jar;lib/guava-31.1-jre.jar;lib/SparseBitSet-1.1.jar;lib/gson-2.8.5.jar;lib/commons-validator-1.6.jar</classpath>
                 <built-to>build</built-to>
                 <source-level>1.8</source-level>
             </compilation-unit>