Bump test dependencies

Author: acogoluegnes

pom.xml

@@ -60,9 +60,9 @@
     <jackson.version>2.12.2</jackson.version>
     <logback.version>1.2.3</logback.version>
     <junit.version>4.13.2</junit.version>
-    <mockito.version>3.7.7</mockito.version>
+    <mockito.version>3.8.0</mockito.version>
     <assertj.version>3.19.0</assertj.version>
-    <jetty.version>9.4.36.v20210114</jetty.version>
+    <jetty.version>9.4.39.v20210325</jetty.version>
     <bouncycastle.version>1.68</bouncycastle.version>
 
     <maven.javadoc.plugin.version>3.2.0</maven.javadoc.plugin.version>