Bump Java from 6 to 8.

src/changes/changes.xml

@@ -64,6 +64,9 @@ The <action> type attribute can be add,update,fix,remove.
         Minor Improvements #34.
       </action>
       <!-- UPDATES -->
+      <action dev="ggregory" type="update" due-to="Gary Gregory">
+        Bump Java from 6 to 8.
+      </action>
       <action dev="ggregory" type="update" due-to="Dependabot, Gary Gregory">
         Bump actions/cache from 2 to 3.0.2 #50, #77.
       </action>