updates index.html for 3.27

index.html

@@ -26,7 +26,7 @@
 
 <ul>
 <li>
-<p>Javassist version 3.26.0-GA is available (October 3, 2019). </p>
+<p>Javassist version 3.27.0-GA is available (March 19, 2020). </p>
 
 <p>This version is distributed under the triple license of the MPL, the LGPL, and the Apache License.
 The distribution includes the jar file, the sources, some samples, the API manual, and a tutorial.