Upgrade Google Java Format 1.11.0 -> 1.13.0 (#114)

See:
- https://github.com/google/google-java-format/releases/tag/v1.12.0
- https://github.com/google/google-java-format/releases/tag/v1.13.0
- google/google-java-format@v1.11.0...v1.13.0

pom.xml

@@ -78,7 +78,7 @@
         <dependency>
             <groupId>com.google.googlejavaformat</groupId>
             <artifactId>google-java-format</artifactId>
-            <version>1.11.0</version>
+            <version>1.13.0</version>
         </dependency>
 
         <dependency>