Update to org.bouncycastle 1.62

Fixes gh-6984

gradle/dependency-management.gradle

@@ -145,8 +145,8 @@ dependencyManagement {
 		dependency 'org.aspectj:aspectjweaver:1.9.4'
 		dependency 'org.assertj:assertj-core:3.12.2'
 		dependency 'org.attoparser:attoparser:2.0.4.RELEASE'
-		dependency 'org.bouncycastle:bcpkix-jdk15on:1.61'
-		dependency 'org.bouncycastle:bcprov-jdk15on:1.61'
+		dependency 'org.bouncycastle:bcpkix-jdk15on:1.62'
+		dependency 'org.bouncycastle:bcprov-jdk15on:1.62'
 		dependency 'org.codehaus.groovy:groovy-all:2.4.14'
 		dependency 'org.codehaus.groovy:groovy-json:2.4.14'
 		dependency 'org.codehaus.groovy:groovy:2.4.14'