GUACAMOLE-2139: Migrate all license information to new automated format.

doc/licenses/apache-santuario/NOTICE

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+# Name:    Apache Santuario
+# URL:     https://santuario.apache.org/
+# From:    'Apache Software Foundation' (https://www.apache.org/)
+# License: Apache v2.0
+#
+# --- BEGIN LICENSE FILE ---
+Apache Santuario - XML Security for Java
+Copyright 1999-2022 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+It was originally based on software copyright (c) 2001, Institute for
+Data Communications Systems, <http://www.nue.et-inf.uni-siegen.de/>.
+
+The development of this software was partly funded by the European 
+Commission in the <WebSig> project in the ISIS Programme. 
+
+This product contains software that is
+copyright (c) 2021, Oracle and/or its affiliates.
+# --- END LICENSE FILE ---

doc/licenses/apache-santuario/dep-coordinates.txt

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+org.apache.santuario:xmlsec:jar:*