Upgrade Truth 1.2.0 -> 1.3.0 (#983)

See:
- https://github.com/google/truth/releases/tag/v1.3.0
- google/truth@v1.2.0...v1.3.0

pom.xml

@@ -327,7 +327,7 @@
             <dependency>
                 <groupId>com.google.truth</groupId>
                 <artifactId>truth</artifactId>
-                <version>1.2.0</version>
+                <version>1.3.0</version>
             </dependency>
             <dependency>
                 <groupId>com.jakewharton.nopen</groupId>