Add slf4j-simple

Author: tomasz-tylenda-sonarsource

its/ruling/pom.xml

@@ -84,6 +84,11 @@
       <version>${project.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.slf4j</groupId>
+      <artifactId>slf4j-simple</artifactId>
+      <version>2.0.17</version>
+    </dependency>
     <!-- not a direct code dependency, but needed to download it and install it into SonarQube -->
     <dependency>
       <groupId>org.sonarsource.java</groupId>