Update aspectj version in sample to 1.6.8

samples/aspectj/pom.xml

@@ -48,12 +48,12 @@
                     <dependency>
                         <groupId>org.aspectj</groupId>
                         <artifactId>aspectjrt</artifactId>
-                        <version>1.6.5</version>
+                        <version>1.6.8</version>
                     </dependency>
                     <dependency>
                         <groupId>org.aspectj</groupId>
                         <artifactId>aspectjtools</artifactId>
-                        <version>1.6.5</version>
+                        <version>1.6.8</version>
                     </dependency>
                 </dependencies>
                 <executions>