Update actions/checkout from v2.3.1 to v2.3.2 #46.

Author: garydgregory

src/changes/changes.xml

@@ -59,6 +59,9 @@
       <action type="update" dev="ggregory" due-to="Dependabot">
         Update maven-pmd-plugin from 3.12.0 to 3.13.0 #44.
       </action>
+      <action type="update" dev="ggregory" due-to="Dependabot">
+        Update actions/checkout from v2.3.1 to v2.3.2 #46.
+      </action>
     </release>
 
     <release version="1.4" date="2017-03-09" description="New features and bug fixes">