Inherit spotless-maven-plugin Version from POM Parent (#552)

Author: Chrimle

pom.xml

@@ -129,7 +129,6 @@
 
         <!-- Spotless -->
         <spotless.check.skip>false</spotless.check.skip> <!-- Unused imports causes build to fail -->
-        <spotless-maven-plugin.version>3.0.0</spotless-maven-plugin.version>
         <!-- /Spotless -->
     </properties>
 
@@ -415,7 +414,6 @@
             <plugin>
                 <groupId>com.diffplug.spotless</groupId>
                 <artifactId>spotless-maven-plugin</artifactId>
-                <version>${spotless-maven-plugin.version}</version>
                 <configuration>
                     <!-- Skips the spotless:apply when running in GitHub Actions -->
                     <skip>${env.CI}</skip>