chore: remove unused spotless-maven-plugin configuration and update invoker plugin version

pom.xml

diff --git a/pom.xml b/pom.xml
index d7e14af..b832a28 100644
--- a/pom.xml
+++ b/pom.xml
@@ -87,8 +87,6 @@
     <mockitoVersion>5.23.0</mockitoVersion>
     <plexusArchiverVersion>4.12.0</plexusArchiverVersion>
     <version.maven-plugin-tools>${mavenPluginPluginVersion}</version.maven-plugin-tools>
-    <version.maven-invoker-plugin>3.7.0</version.maven-invoker-plugin>
-
     <project.build.outputTimestamp>2024-06-26T08:31:50Z</project.build.outputTimestamp>
   </properties>
 
@@ -189,22 +187,6 @@
     <pluginManagement>
       <plugins>
         <plugin>
-          <groupId>com.diffplug.spotless</groupId>
-          <artifactId>spotless-maven-plugin</artifactId>
-          <configuration>
-            <java>
-              <includes>
-                <include>src/**/*.java</include>
-              </includes>
-            </java>
-            <pom>
-              <includes>
-                <include>**/pom.xml</include>
-              </includes>
-            </pom>
-          </configuration>
-        </plugin>
-        <plugin>
           <groupId>org.apache.rat</groupId>
           <artifactId>apache-rat-plugin</artifactId>
           <configuration>