fixes maven 3.9 breaking change
https://maven.apache.org/docs/3.9.0/release-notes.html#potentially-breaking-core-changes
--- airsonic-advanced-1397446f979b1cdea283eec89ce4f0eae7d63450/.mvn/maven.config
+++ airsonic-advanced-1397446f979b1cdea283eec89ce4f0eae7d63450/.mvn/maven.config
@@ -1 +1,2 @@
---settings ./.mvn/settings.xml
+--settings
+./.mvn/settings.xml