[maven]: Bump com.diffplug.spotless:spotless-maven-plugin (#412)

Author: dependabot[bot]

pom.xml

@@ -56,7 +56,7 @@
         <mockito.version>5.23.0</mockito.version>
         <slf4j.version>2.0.18</slf4j.version>
         <jacoco.version>0.8.14</jacoco.version>
-        <spotless.version>3.5.1</spotless.version>
+        <spotless.version>3.6.0</spotless.version>
     </properties>
 
     <dependencyManagement>