update to powsybl-ws-dependencies 2.9.0 (#71)

Signed-off-by: BOUHOURS Antoine <[email protected]>

Author: antoinebhs

pom.xml

@@ -42,7 +42,7 @@
     </developers>
 
     <properties>
-        <powsybl-ws-dependencies.version>2.8.0</powsybl-ws-dependencies.version>
+        <powsybl-ws-dependencies.version>2.9.0</powsybl-ws-dependencies.version>
     </properties>
 
     <build>