Chrome/Edge 141, Firefox 143, FirefoxESR 140

Author: rbri

src/test/java/org/htmlunit/javascript/host/dom/MutationObserverTest.java

@@ -397,7 +397,7 @@ public void attributeValueAddRemove() throws Exception {
                   "[object HTMLInputElement]-attributes",
                   "[object HTMLInputElement]-attributes",
                   "[object HTMLHeadingElement]-attributes"},
-            FF_ESR = {"[object HTMLInputElement]-attributes",
+            FF_ESR = {"[object HTMLInputElement]-attributesn",
                       "[object HTMLInputElement]-attributes",
                       "[object HTMLInputElement]-attributes",
                       "[object HTMLInputElement]-attributes",