Bump async-http-client from 1.7.17 to 1.9.0

Bumps [async-http-client](https://github.com/AsyncHttpClient/async-http-client) from 1.7.17 to 1.9.0.
- [Release notes](https://github.com/AsyncHttpClient/async-http-client/releases)
- [Changelog](https://github.com/AsyncHttpClient/async-http-client/blob/master/CHANGES.md)
- [Commits](AsyncHttpClient/async-http-client@async-http-client-1.7.17...async-http-client-1.9.0)

---
updated-dependencies:
- dependency-name: com.ning:async-http-client
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -183,7 +183,7 @@
             <dependency>
                 <groupId>com.ning</groupId>
                 <artifactId>async-http-client</artifactId>
-                <version>1.7.17</version>
+                <version>1.9.0</version>
             </dependency>
 
             <!-- JDBC libs -->