Upgrade to log4j2 2.19.0.

Related: #1274.

Author: gregturn

pom.xml

@@ -105,7 +105,7 @@
         <jdom2.version>2.0.6.1</jdom2.version>
         <jetty.version>11.0.7</jetty.version>
         <junit.version>5.9.1</junit.version>
-        <log4j2.version>2.17.1</log4j2.version>
+        <log4j2.version>2.19.0</log4j2.version>
         <mail.version>1.4.7</mail.version>
         <mockito.version>4.0.0</mockito.version>
         <saaj-impl.version>2.0.1</saaj-impl.version>