Upgrade fmt-maven-plugin to 2.9
diff --git a/pom.xml b/pom.xml
index 86c621d..3b2c2fc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -658,7 +658,7 @@
                 <plugin>
                     <groupId>com.coveo</groupId>
                     <artifactId>fmt-maven-plugin</artifactId>
-                    <version>2.5.1</version>
+                    <version>2.9</version>
                 </plugin>
 
                 <plugin>