⬆ 升级 Latke 和 flexmark

pom.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <!--
     Description: Solo POM.
-    Version: 3.18.3.67, Jul 22, 2019
+    Version: 3.18.3.68, Jul 29, 2019
     Author: <a href="http://88250.b3log.org">Liang Ding</a>
     Author: <a href="http://www.annpeter.cn">Ann Peter</a>
     Author: <a href="http://vanessa.b3log.org">Vanessa</a>
@@ -73,11 +73,11 @@
     </scm>
 
     <properties>
-        <org.b3log.latke.version>2.5.6</org.b3log.latke.version>
+        <org.b3log.latke.version>2.5.7</org.b3log.latke.version>
 
         <slf4j.version>1.7.5</slf4j.version>
         <jsoup.version>1.9.1</jsoup.version>
-        <flexmark.version>0.40.20</flexmark.version>
+        <flexmark.version>0.50.20</flexmark.version>
         <jetty.version>9.4.12.v20180830</jetty.version>
         <commons-cli.version>1.3.1</commons-cli.version>
         <commons-codec.version>1.10</commons-codec.version>