build: pin fmt-maven-plugin version to 2.9

BenWhitehead · BenWhitehead · commit 64597019d7e3 · 2021-05-26T19:02:31.000-04:00
fmt-maven-plugin v2.10 is compiled for java 11, v2.9 is compiled for java 8 port of fix from googleapis/java-shared-config#90
diff --git a/pom.xml b/pom.xml
@@ -233,6 +233,17 @@
         </plugin>
       </plugins>
     </pluginManagement>
+    <plugins>
+      <plugin>
+        <groupId>com.coveo</groupId>
+        <artifactId>fmt-maven-plugin</artifactId>
+        <version>2.9</version>
+        <configuration>
+          <style>google</style>
+          <verbose>true</verbose>
+        </configuration>
+      </plugin>
+    </plugins>
   </build>
 
   <modules>
