Update dependency com.diffplug.spotless:spotless-maven-plugin to v3.8.0

Author: renovate[bot]

pom.xml

@@ -61,7 +61,7 @@
         <central-publishing-maven-plugin-version>0.10.0</central-publishing-maven-plugin-version>
         <maven-checkstyle-plugin-version>3.6.0</maven-checkstyle-plugin-version>
         <maven-bundle-plugin-version>5.1.9</maven-bundle-plugin-version>
-        <spotless-maven-plugin-version>3.7.0</spotless-maven-plugin-version>
+        <spotless-maven-plugin-version>3.8.0</spotless-maven-plugin-version>
         <maven-surefire-plugin-version>3.5.6</maven-surefire-plugin-version>
         <google-java-format-version>1.34.1</google-java-format-version>
         <maven-enforcer-version>3.6.3</maven-enforcer-version>