Bump to v1.15.1

Signed-off-by: Damien Jeandemange <damien.jeandemange@artelys.com>

Author: jeandemanged

README.md

@@ -124,7 +124,7 @@ After adding a last Maven dependency on Open Load Flow implementation:
 <dependency>
     <groupId>com.powsybl</groupId>
     <artifactId>powsybl-open-loadflow</artifactId>
-    <version>1.15.0</version>
+    <version>1.15.1</version>
 </dependency>
 ```
 

pom.xml

@@ -19,7 +19,7 @@
     </parent>
 
     <artifactId>powsybl-open-loadflow</artifactId>
-    <version>1.15.1-SNAPSHOT</version>
+    <version>1.15.1</version>
 
     <name>powsybl open loadflow</name>
     <description>An open source loadflow based on PowSyBl</description>