Bump test dependencies

Author: acogoluegnes

pom.xml

@@ -61,10 +61,10 @@
     <logback.version>1.2.3</logback.version>
     <junit.version>4.12</junit.version>
     <awaitility.version>4.0.1</awaitility.version>
-    <mockito.version>3.0.0</mockito.version>
-    <assertj.version>3.13.2</assertj.version>
-    <jetty.version>9.4.20.v20190813</jetty.version>
-    <bouncycastle.version>1.63</bouncycastle.version>
+    <mockito.version>3.2.0</mockito.version>
+    <assertj.version>3.14.0</assertj.version>
+    <jetty.version>9.4.24.v20191120</jetty.version>
+    <bouncycastle.version>1.64</bouncycastle.version>
 
     <maven.javadoc.plugin.version>3.1.1</maven.javadoc.plugin.version>
     <maven.release.plugin.version>2.5.3</maven.release.plugin.version>