fix: Upgrade django-webpack-loader to match webpack-bundle-tracker

The versions of these two tools is now kept in sync.  As a part of the
migration, the method signature for render_bundle changes which we
needed to update in our Mako templates where it doesn't automatically
pass context.

common/djangoapps/pipeline_mako/templates/static_content.html

@@ -147,7 +147,7 @@ if not source:
     <%
         body = capture(caller.body)
     %>
-    ${HTML(render_bundle(entry, extension=None, config='DEFAULT', attrs=attrs))}
+    ${HTML(render_bundle(context, entry, extension=None, config='DEFAULT', attrs=attrs))}
     % if body:
       <script type="text/javascript">
         ${body | n, decode.utf8}
@@ -166,8 +166,8 @@ if not source:
         component as props.
     </%doc>
 
-    ${HTML(render_bundle(component))}
-    ${HTML(render_bundle('ReactRenderer'))}
+    ${HTML(render_bundle(context, component))}
+    ${HTML(render_bundle(context,'ReactRenderer'))}
 
     <div id="${id}"></div>
     <script type="text/javascript">