KNOX-2440 - Upgrade dependency-check-maven to 6.0.0

Signed-off-by: Kevin Risden <krisden@apache.org>
diff --git a/pom.xml b/pom.xml
index f2a12fd..aa933cc 100644
--- a/pom.xml
+++ b/pom.xml
@@ -183,7 +183,7 @@
         <cors-filter.version>2.9</cors-filter.version>
         <cryptacular.version>1.2.4</cryptacular.version>
         <curator.version>4.3.0</curator.version>
-        <dependency-check-maven.version>5.3.2</dependency-check-maven.version>
+        <dependency-check-maven.version>6.0.0</dependency-check-maven.version>
         <derby.db.version>10.14.2.0</derby.db.version> <!-- 10.15.1.3 requires Java 9 -->
         <dockerfile-maven-plugin.version>1.4.13</dockerfile-maven-plugin.version>
         <dom4j.version>2.1.3</dom4j.version>