[bug-63046] Fix Java 16 build

org.apache.santuario:xmlsec:2.2.0 has a dependency on SLF4J. We use this in SignatureInfo.java.

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1886811 13f79535-47bb-0310-9956-ffa450edef68
1 file changed