[CODEC-285] Upgrade JUnit to 5.6.0 #39.

Author: garydgregory

src/changes/changes.xml

@@ -55,7 +55,7 @@ The <action> type attribute can be add,update,fix,remove.
       <action                   dev="ggregory" type="update" due-to="Dependabot, Gary Gregory">Bump actions/setup-java from v1.4.1 to v2 #60, #62.</action>
       <action                   dev="ggregory" type="update" due-to="Dependabot">Bump actions/checkout from v2.3.2 to v2.4.0 #65, #98.</action>
       <action                   dev="ggregory" type="update" due-to="Dependabot">Bump actions/cache from v2 to v2.1.7 #75, #99.</action>
-      <action                   dev="ggregory" type="update" due-to="Dependabot">Bump junit from 4.13.1 to 4.13.2 #76.</action>
+      <action issue="CODEC-285" dev="ggregory" type="update" due-to="Dependabot, John Patrick">Bump junit from 4.13.1 to 5.6.0 #76, #39.</action>
       <action                   dev="ggregory" type="update" due-to="Gary Gregory">Bump Java 7 to 8.</action>
       <action                   dev="ggregory" type="update" due-to="Gary Gregory">Bump japicmp-maven-plugin from 0.14.3 to 0.15.3.</action>
       <action                   dev="ggregory" type="update" due-to="Gary Gregory">Bump jacoco-maven-plugin from 0.8.5 to 0.9.7 (Fixes Java 15 builds).</action>