chore: update fmt plugin in gapic showcase

Author: diegomarquezp

java-showcase/gapic-showcase/pom.xml

@@ -43,9 +43,9 @@
         </executions>
       </plugin>
       <plugin>
-        <groupId>com.coveo</groupId>
+        <groupId>com.spotify.fmt</groupId>
         <artifactId>fmt-maven-plugin</artifactId>
-        <version>2.9</version>
+        <version>2.25</version>
         <configuration>
           <filesNamePattern>(IT.*\.java)|(.*Test.java)|(TestClientInitializer.java)</filesNamePattern>
         </configuration>