fix(deps): update dependency org.apache.groovy:groovy-bom to v4.0.28

Author: renovate[bot]

mybatis-spring-boot-samples/mybatis-spring-boot-sample-groovy/pom.xml

@@ -28,7 +28,7 @@
   <name>mybatis-spring-boot-sample-groovy</name>
   <properties>
     <module.name>org.mybatis.spring.boot.sample.groovy</module.name>
-    <groovy.version>4.0.27</groovy.version>
+    <groovy.version>4.0.28</groovy.version>
     <sourceDirectory>${project.basedir}/src/main/groovy</sourceDirectory>
     <testSourceDirectory>${project.basedir}/src/test/groovy</testSourceDirectory>
   </properties>