Merge pull request #1009 from factcast/renovate/spotless-maven-plugin…

….version

Update dependency com.diffplug.spotless:spotless-maven-plugin to v2.1.0

pom.xml

@@ -68,7 +68,7 @@
     <maven-failsafe-plugin.version>3.0.0-M4</maven-failsafe-plugin.version>
     <nexus-staging-maven-plugin.version>1.6.8</nexus-staging-maven-plugin.version>
     <directory-maven-plugin.version>0.3.1</directory-maven-plugin.version>
-    <spotless-maven-plugin.version>2.0.3</spotless-maven-plugin.version>
+    <spotless-maven-plugin.version>2.1.0</spotless-maven-plugin.version>
     <jacoco-maven-plugin.version>0.8.5</jacoco-maven-plugin.version>
     <spring-boot-maven-plugin.version>2.3.3.RELEASE</spring-boot-maven-plugin.version>
     <maven.version>3.6.3</maven.version>