Update uk.org.webcompere:system-stubs-core to version 2.1.8 (#3589)

Author: asf-rm

log4j-parent/pom.xml

@@ -138,7 +138,7 @@
     <pax-exam.version>4.14.0</pax-exam.version>
     <plexus-utils.version>3.6.0</plexus-utils.version>
     <spotbugs-annotations.version>4.9.3</spotbugs-annotations.version>
-    <system-stubs.version>2.1.7</system-stubs.version>
+    <system-stubs.version>2.1.8</system-stubs.version>
     <velocity.version>1.7</velocity.version>
     <xmlunit.version>2.10.0</xmlunit.version>
 

src/changelog/.3.x.x/update_uk_org_webcompere_system_stubs_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="3589" link="https://github.com/apache/logging-log4j2/pull/3589"/>
+  <description format="asciidoc">Update `uk.org.webcompere:system-stubs-core` to version `2.1.8`</description>
+</entry>