Maven, special character encoding

Some time ago, I posted this question about sending request having special character (like "éèàù") inside of them. The problem is now fixed, however, when I try to launch my test using maven, I have the same problem again.

Here is my pom:

<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0"
			xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
			xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>com.myproject.soapuitest</groupId><artifactId>running-soapui-test</artifactId><version>1.0-SNAPSHOT</version><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><pluginRepositories><pluginRepository><id>smartbear-sweden-plugin-repository</id><url>http://www.soapui.org/repository/maven2/</url></pluginRepository></pluginRepositories><build><plugins><plugin><groupId>org.apache.maven.plugins</groupId><artifactId>maven-resources-plugin</artifactId><version>3.1.0</version><configuration><encoding>UTF-8</encoding></configuration></plugin><plugin><groupId>com.smartbear.soapui</groupId><artifactId>soapui-maven-plugin</artifactId><version>5.5.0</version><dependencies><dependency><groupId>com.jgoodies</groupId><artifactId>jgoodies-forms</artifactId><version>1.9.0</version></dependency></dependencies><configuration><projectFile>myproject-soapui-project.xml</projectFile><outputFolder>${project.basedir}\output</outputFolder><junitReport>true</junitReport></configuration><executions><execution><id>soapUI1</id><phase>test</phase><goals><goal>test</goal></goals></execution></executions></plugin></plugins></build></project>

As you can see, I tried to set the encoding to UTF-8, but with no success (so far). 

So, any suggestions as how to fix this issue?