deps: update guava to 28.2-android (#1473)

Author: elharo

pom.xml

@@ -488,7 +488,7 @@
     <project.jsr305.version>3.0.2</project.jsr305.version>
     <project.gson.version>2.8.6</project.gson.version>
     <project.protobuf-java.version>3.11.1</project.protobuf-java.version>
-    <project.guava.version>28.1-android</project.guava.version>
+    <project.guava.version>28.2-android</project.guava.version>
     <project.appengine.version>1.9.77</project.appengine.version>
     <project.xpp3.version>1.1.4c</project.xpp3.version>
     <project.httpclient.version>4.5.10</project.httpclient.version>