Always refreshes artifacts in MavenITmng7470ResolverTransportTest

Author: slawekjaranowski

core-it-suite/src/test/java/org/apache/maven/it/MavenITmng7470ResolverTransportTest.java

@@ -80,6 +80,7 @@ private void performTest(/* nullable */ final String transport, final String log
         verifier.deleteDirectory("target");
         verifier.deleteArtifacts("org.apache.maven.resolver.resolver-demo-maven-plugin");
         verifier.deleteArtifacts("org.apache.maven.its.resolver-transport");
+        verifier.addCliArgument("-U");
         verifier.addCliArgument("-X");
         verifier.addCliArgument("-s");
         verifier.addCliArgument(new File(projectDir, "settings.xml").getAbsolutePath());