fix: lock the google-java-format version used by formatter plugin (#149)

Author: chingor13

pom.xml

@@ -212,6 +212,13 @@
  <style>google</style>
  <verbose>true</verbose>
  </configuration>
+ <dependencies>
+ <dependency>
+ <groupId>com.google.googlejavaformat</groupId>
+ <artifactId>google-java-format</artifactId>
+ <version>1.7</version>
+ </dependency>
+ </dependencies>
  </plugin>
  <plugin>
  <groupId>org.codehaus.mojo</groupId>