Upgrade BouncyCastle

BouncyCastle should be upgraded to the latest release. The current version we are picking up contains security advisories:

bcprov-jdk15on-1.56.jar (cpe:/a:bouncycastle:bouncy-castle-crypto-package:1.56, org.bouncycastle:bcprov-jdk15on:1.56, cpe:/a:bouncycastle:legion-of-the-bouncy-castle-java-crytography-api:1.56, cpe:/a:bouncycastle:bouncy_castle_crypto_package:1.56) : CVE-2017-13098, CVE-2018-1000180, CVE-2018-1000613