Update dependency com.google.guava:guava to v33

Author: renovate[bot]

pom.xml

@@ -94,7 +94,7 @@
         <dependency>
             <groupId>com.google.guava</groupId>
             <artifactId>guava</artifactId>
-            <version>32.1.2-jre</version>
+            <version>33.2.1-jre</version>
         </dependency>
         <dependency>
             <groupId>com.discord4j</groupId>