chore(deps): update dependency com.diffplug.spotless:spotless-maven-plugin to v3.9.0 (#1541)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -74,7 +74,7 @@
         <maven-site-plugin.version>3.22.0</maven-site-plugin.version>
         <maven-source-plugin.version>3.4.0</maven-source-plugin.version>
         <maven-surefire-plugin.version>3.5.6</maven-surefire-plugin.version>
-        <spotless-maven-plugin.version>3.8.0</spotless-maven-plugin.version>
+        <spotless-maven-plugin.version>3.9.0</spotless-maven-plugin.version>
         <versions-maven-plugin.version>2.21.0</versions-maven-plugin.version>
     </properties>