Update README.md

Prepare for release

Author: gmfeinberg

README.md

@@ -37,7 +37,7 @@ project. The version changes with each release.
 <dependency>
   <groupId>com.oracle.nosql.sdk</groupId>
   <artifactId>nosqldriver</artifactId>
-  <version>5.2.26</version>
+  <version>5.2.27</version>
 </dependency>
 ```