Upgrade log4j libs from 2.17.1 to 2.23.1.

.classpath

@@ -14,7 +14,6 @@
 	<classpathentry kind="lib" path="lib/UnitTesting/hamcrest-core-1.3.jar" sourcepath="lib/UnitTesting/hamcrest-core-1.3-sources.jar"/>
 	<classpathentry kind="lib" path="lib/UnitTesting/junit-4.12.jar" sourcepath="lib/UnitTesting/junit-4.12-sources.jar"/>
 	<classpathentry kind="lib" path="lib/commons-io-2.7.jar" sourcepath="lib/commons-io-2.7-sources.jar"/>
-	<classpathentry kind="lib" path="lib/Logs/slf4j-api-1.7.32.jar" sourcepath="lib/Logs/slf4j-api-1.7.32-sources.jar"/>
 	<classpathentry kind="lib" path="lib/commons-lang3-3.13.0.jar" sourcepath="lib/commons-lang3-3.13.0-sources.jar"/>
 	<classpathentry kind="con" path="org.eclipse.jst.server.core.container/org.eclipse.jst.server.tomcat.runtimeTarget/apache-tomcat-10.1.12">
 		<attributes>
@@ -22,8 +21,9 @@
 		</attributes>
 	</classpathentry>
 	<classpathentry kind="lib" path="lib/devinsy-strings-0.17.0.jar" sourcepath="lib/devinsy-strings-0.17.0-sources.zip"/>
-	<classpathentry kind="lib" path="lib/Logs/log4j-api-2.17.1.jar" sourcepath="lib/Logs/log4j-api-2.17.1-sources.jar"/>
-	<classpathentry kind="lib" path="lib/Logs/log4j-core-2.17.1.jar" sourcepath="lib/Logs/log4j-core-2.17.1-sources.jar"/>
-	<classpathentry kind="lib" path="lib/Logs/log4j-slf4j-impl-2.17.1.jar" sourcepath="lib/Logs/log4j-slf4j-impl-2.17.1-sources.jar"/>
+	<classpathentry kind="lib" path="lib/Logs/log4j-api-2.23.1.jar" sourcepath="lib/Logs/log4j-api-2.23.1-sources.jar"/>
+	<classpathentry kind="lib" path="lib/Logs/log4j-core-2.23.1.jar" sourcepath="lib/Logs/log4j-core-2.23.1-sources.jar"/>
+	<classpathentry kind="lib" path="lib/Logs/log4j-slf4j2-impl-2.23.1.jar" sourcepath="lib/Logs/log4j-slf4j2-impl-2.32.1-sources.jar"/>
+	<classpathentry kind="lib" path="lib/Logs/slf4j-api-2.0.16.jar" sourcepath="lib/Logs/slf4j-api-2.0.16-sources.jar"/>
 	<classpathentry kind="output" path="bin"/>
 </classpath>