update saxon

Author: Klaus Rettinghaus

Dockerfile

@@ -9,7 +9,7 @@ LABEL org.opencontainers.image.revision="v0.0.1"
 ARG DEBIAN_FRONTEND=noninteractive
 ARG JAVA_VERSION=17
 ARG PRINCE_VERSION=15.1
-ARG SAXON_VERSION=SaxonHE11-5
+ARG SAXON_VERSION=SaxonHE12-4
 ARG TARGETARCH
 ARG UBUNTU_VERSION=22.04
 ARG XERCES_VERSION=25.1.0.1