Issue checkstyle#141: Some config results in OOM, reduce list of project in config

Author: piyush kumar sadangi

extractor/src/main/java/com/example/extractor/ConfigSerializer.java

@@ -517,7 +517,9 @@ private static void appendProperty(final StringBuilder builder, final String ind
     private static String escapeXml(final String input) {
         String result = input;
         if (input != null && !input.isEmpty()) {
-            result = input.replace("\"", """)
+            result = input.replace("&", "&")
+                    .replace("<", "&lt;")
+                    .replace("\"", "&quot;")
                     .replace("'", "&apos;");
         }
         return result;
@@ -535,6 +537,10 @@ private static String escapeXml(final String input) {
     private static String escapeXmlAttributeValue(final String input, final char delimiter) {
         String result = input;
         if (input != null && !input.isEmpty()) {
+            // Escape '&', '<', and '>'
+            result = result.replace("&", "&amp;")
+                    .replace("<", "&lt;");
+            // Escape the delimiter character
             if (delimiter == '\'') {
                 result = result.replace("'", "&apos;");
             }