Fix log4j warnings

Author: amanteaux

pom.xml

@@ -156,6 +156,17 @@
 			<artifactId>poi-ooxml</artifactId>
 			<version>5.2.3</version>
 		</dependency>
+		<dependency>
+			<groupId>org.apache.logging.log4j</groupId>
+			<artifactId>log4j-to-slf4j</artifactId>
+			<version>2.20.0</version>
+			<exclusions>
+				<exclusion>
+					<artifactId>slf4j-api</artifactId>
+					<groupId>org.slf4j</groupId>
+				</exclusion>
+			</exclusions>
+		</dependency>
 
 		<dependency>
 			<groupId>com.opencsv</groupId>
@@ -188,12 +199,6 @@
 			<version>1.4.7</version>
 			<scope>test</scope>
 		</dependency>
-		<dependency>
-			<groupId>org.apache.logging.log4j</groupId>
-			<artifactId>log4j-slf4j2-impl</artifactId>
-			<version>2.20.0</version>
-			<scope>test</scope>
-		</dependency>
 	</dependencies>
 
 </project>