Flip equals to get rid of immediate NPE in #507

To followup with a more thorough fix if we learn more about the usage there.

src/main/java/org/openrewrite/java/spring/security6/UpdateRequestCache.java

@@ -143,7 +143,7 @@ private static boolean isContinueParameterStatement(Statement statement) {
 
             if (CONTINUE_PARAMETER_MATCHER.matches(m)) {
                 if (m.getArguments().get(0) instanceof J.Literal) {
-                    return ((J.Literal) m.getArguments().get(0)).getValue().equals("continue");
+                    return "continue".equals(((J.Literal) m.getArguments().get(0)).getValue());
                 }
             }
         }