deps: update dependency com.google.guava:guava to v30 (#549)

Author: renovate-bot

pom.xml

@@ -441,7 +441,7 @@
     <project.http.version>1.37.0</project.http.version>
     <project.jsr305.version>3.0.2</project.jsr305.version>
     <project.jackson-core2.version>2.9.6</project.jackson-core2.version>
-    <project.guava.version>29.0-android</project.guava.version>
+    <project.guava.version>30.0-android</project.guava.version>
     <project.xpp3.version>1.1.4c</project.xpp3.version>
     <project.commons-logging.version>1.1.1</project.commons-logging.version>
     <project.jdo2-api.version>2.3-eb</project.jdo2-api.version>