[MNG-7902] Sort plugins in the validation report (#1510)

Co-authored-by: Yueh Chun Wu <kevinwu@YuehdeMBP.attlocal.net>

(cherry picked from commit dd96794)

maven-core/src/main/java/org/apache/maven/plugin/internal/DefaultPluginValidationManager.java

@@ -23,6 +23,7 @@
 
 import java.io.File;
 import java.nio.file.Path;
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
@@ -222,7 +223,12 @@ private void reportSessionCollectedValidationIssues(MavenSession mavenSession) {
             logger.warn("");
             logger.warn("Plugin {} validation issues were detected in following plugin(s)", issueLocalitiesToReport);
             logger.warn("");
-            for (Map.Entry<String, PluginValidationIssues> entry : issuesMap.entrySet()) {
+
+            // Sorting the plugins
+            List<Map.Entry<String, PluginValidationIssues>> sortedEntries = new ArrayList<>(issuesMap.entrySet());
+            sortedEntries.sort(Map.Entry.comparingByKey(String.CASE_INSENSITIVE_ORDER));
+
+            for (Map.Entry<String, PluginValidationIssues> entry : sortedEntries) {
                 PluginValidationIssues issues = entry.getValue();
                 if (!hasAnythingToReport(issues, issueLocalitiesToReport)) {
                     continue;