Update versions of Truth and Guava in Maven build.

Fixes google#405

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=280302646

Author: elharo

pom.xml

@@ -95,9 +95,9 @@
   <properties>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <java.version>1.8</java.version>
-    <guava.version>27.0.1-jre</guava.version>
+    <guava.version>28.1-jre</guava.version>
     <javac.version>9+181-r4173-1</javac.version>
-    <truth.version>0.45</truth.version>
+    <truth.version>1.0</truth.version>
     <jsr305.version>3.0.2</jsr305.version>
   </properties>