Upgrade spotless-maven-plugin to 3.0.0 (#1961)

Author: dependabot[bot]

org.jacoco.build/pom.xml

@@ -450,7 +450,7 @@
         <plugin>
           <groupId>com.diffplug.spotless</groupId>
           <artifactId>spotless-maven-plugin</artifactId>
-          <version>2.46.1</version>
+          <version>3.0.0</version>
        </plugin>
        <plugin>
          <groupId>org.sonarsource.scanner.maven</groupId>