Merge pull request AsyncHttpClient#744 from barnardb/1.9.x-animal-sniffer

[1.9.x] Upgrade to animal-sniffer-maven-plugin 1.11

Author: Stephane Landelle

pom.xml

@@ -248,7 +248,7 @@
             <plugin>
                 <groupId>org.codehaus.mojo</groupId>
                 <artifactId>animal-sniffer-maven-plugin</artifactId>
-                <version>1.6</version>
+                <version>1.11</version>
                 <configuration>
                     <signature>
                         <groupId>org.codehaus.mojo.signature</groupId>