deps: update dependency com.spotify.fmt:fmt-maven-plugin to v2.28 (#747)

Author: renovate-bot

pom.xml

@@ -182,7 +182,7 @@
           <plugin>
             <groupId>com.spotify.fmt</groupId>
             <artifactId>fmt-maven-plugin</artifactId>
-            <version>2.27</version>
+            <version>2.28</version>
             <executions>
               <execution>
                 <id>format-main</id>