Bump powsybl-core to 7.1.2 (#791)

Signed-off-by: Olivier Perrin <olivier.perrin@rte-france.com>
(cherry picked from commit b787aa9)

Author: olperr1

pom.xml

@@ -73,7 +73,7 @@
             **/generated/**/*
         </sonar.exclusions>
 
-        <powsybl-core.version>7.1.0</powsybl-core.version>
+        <powsybl-core.version>7.1.2</powsybl-core.version>
 
     </properties>