Update CHANGELOG.md

Author: kiview

CHANGELOG.md

@@ -8,6 +8,7 @@ All notable changes to this project will be documented in this file.
 
 ### Changed
 - Update Apache Pulsar module to 2.0.1 [\#760](https://github.com/testcontainers/testcontainers-java/issues/760).
+- Make JdbcDatabaseContainer#getDriverClassName public [\#743](https://github.com/testcontainers/testcontainers-java/pull/743).
 
 ## [1.8.0] - 2018-06-14