build: update maven-war-plugin to 3.4.0

Changelog:
- https://www.mail-archive.com/announce@maven.apache.org/msg01020.html (3.3.2)
- https://github.com/apache/maven-war-plugin/releases/tag/maven-war-plugin-3.4.0

Fix #1771

Author: php-coder

pom.xml

@@ -691,7 +691,7 @@
 		<thymeleaf.version>3.0.11.RELEASE</thymeleaf.version>
 
 		<togglz.version>2.6.1.Final</togglz.version>
-		<war.plugin.version>3.3.1</war.plugin.version>
+		<war.plugin.version>3.4.0</war.plugin.version>
 		<wiremock.plugin.version>7.3.0</wiremock.plugin.version>
 		<wiremock.version>2.35.1</wiremock.version>
 	</properties>