Upgrade various dependencies

Upgraded dependencies:

• org.apache.santuario:xmlsec 2.2.0 -> 2.2.3
• org.apache.commons:commons-compress 1.20 -> 1.21
• org.apache.ant:ant 1.10.9 -> 1.10.11
• net.minidev:json-smart 1.1.1 -> 1.3.3
• org.apache.pdfbox:pdfbox 2.0.21 -> 2.0.24
• org.apache.pdfbox:pdfbox-tools 2.0.21 -> 2.0.24
• org.apache.pdfbox:fontbox 2.0.21 -> 2.0.24
• org.bouncycastle:bcmail-jdk15on 1.66 -> 1.69
• org.bouncycastle:bcprov-jdk15on 1.66 -> 1.69
• org.bouncycastle:bcpkix-jdk15on 1.66 -> 1.69
• com.thoughtworks.xstream:xstream 1.4.15 -> 1.4.18