Upgrade Guava 32.1.1-jre -> 32.1.2-jre (#735)

See:
- https://github.com/google/guava/releases/tag/v32.1.2
- google/guava@v32.1.1...v32.1.2

pom.xml

@@ -307,7 +307,7 @@
             <dependency>
                 <groupId>com.google.guava</groupId>
                 <artifactId>guava-bom</artifactId>
-                <version>32.1.1-jre</version>
+                <version>32.1.2-jre</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>