Upgrade guava to 28.2-jre

Change-Id: I06b4f30765f5313cf5669ff3119f8265c96bbfb9

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index be33209..39e6c59 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -58,8 +58,8 @@
 
 maven_jar(
     name = "guava",
-    artifact = "com.google.guava:guava:28.1-jre",
-    sha1 = "b0e91dcb6a44ffb6221b5027e12a5cb34b841145",
+    artifact = "com.google.guava:guava:28.2-jre",
+    sha1 = "8ec9ed76528425762174f0011ce8f74ad845b756",
 )
 
 maven_jar(