Update ch.qos.logback:logback-core to version 1.4.0 (#2975)

Author: asf-rm

pom.xml

@@ -350,7 +350,7 @@
     <site-log4j-api.version>2.24.0</site-log4j-api.version>
     <site-log4j-core.version>2.24.0</site-log4j-core.version>
     <site-log4j-layout-template-json.version>2.24.0</site-log4j-layout-template-json.version>
-    <site-logback.version>1.5.5</site-logback.version>
+    <site-logback.version>1.4.0</site-logback.version>
     <site-slf4j.version>2.0.16</site-slf4j.version>
 
     <!-- =====================================================

src/changelog/.2.x.x/update_ch_qos_logback_logback_core.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<entry xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns="https://logging.apache.org/xml/ns"
+       xsi:schemaLocation="https://logging.apache.org/xml/ns https://logging.apache.org/xml/ns/log4j-changelog-0.xsd"
+       type="updated">
+  <issue id="2975" link="https://github.com/apache/logging-log4j2/pull/2975"/>
+  <description format="asciidoc">Update `ch.qos.logback:logback-core` to version `1.4.0`</description>
+</entry>