Upgrade Guava 31.0.1-jre -> 31.1-jre (#77)

See:
- https://guava.dev/releases/31.1-jre/api/diffs/
- https://github.com/google/guava/releases/tag/v31.1
- google/guava@v31.0.1...v31.1

pom.xml

@@ -247,7 +247,7 @@
             <dependency>
                 <groupId>com.google.guava</groupId>
                 <artifactId>guava-bom</artifactId>
-                <version>31.0.1-jre</version>
+                <version>31.1-jre</version>
                 <type>pom</type>
                 <scope>import</scope>
             </dependency>