fix build action

Author: rfresh2

.github/workflows/build.yml

@@ -34,4 +34,4 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: JMWaypointsToXaero
-          path: JMWaypointsToXaero-*.jar
+          path: build/libs/JMWaypointsToXaero-*.jar