Use StringUtils.toRootLowerCase

Author: garydgregory

src/main/java/org/apache/commons/release/plugin/mojos/CommonsDistributionDetachmentMojo.java

@@ -26,7 +26,6 @@
 import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
-import java.util.Locale;
 import java.util.Set;
 
 import org.apache.commons.codec.digest.DigestUtils;
@@ -225,7 +224,7 @@ private String getSha512FilePath(final File directory, final File file) {
      */
     private void hashArtifacts() throws MojoExecutionException {
         for (final Artifact artifact : detachedArtifacts) {
-            if (!artifact.getFile().getName().toLowerCase(Locale.ROOT).contains("asc")) {
+            if (!StringUtils.toRootLowerCase(artifact.getFile().getName()).contains("asc")) {
                 final String artifactKey = getArtifactKey(artifact);
                 try {
                     final String digest;