chore(deps): update dependency com.diffplug.spotless:spotless-maven-plugin to v3.4.0

Author: renovate[bot]

pom.xml

@@ -125,7 +125,7 @@
         <dependency-check-maven.version>8.4.3</dependency-check-maven.version>
         <jacoco.version>0.8.14</jacoco.version>
         <sonar.version>5.5.0.6356</sonar.version>
-        <spotless.version>3.1.0</spotless.version>
+        <spotless.version>3.4.0</spotless.version>
     </properties>
 
     <build>