deps: update dependency com.google.guava:guava to v30.1-android (#96)

Author: renovate-bot

pom.xml

@@ -67,7 +67,7 @@
     <protobuf.version>3.14.0</protobuf.version>
     <junit.version>4.13.1</junit.version>
     <grpc.version>1.33.1</grpc.version>
-    <guava.version>30.0-android</guava.version>
+    <guava.version>30.1-android</guava.version>
   </properties>
 
   <dependencyManagement>