config: update guava to 30.0 to fix security alert

Author: romani

pom.xml

@@ -160,7 +160,7 @@
     <dependency>
       <groupId>com.google.guava</groupId>
       <artifactId>guava</artifactId>
-      <version>29.0-jre</version>
+      <version>30.0-jre</version>
     </dependency>
     <dependency>
       <groupId>org.sonarsource.sonarqube</groupId>