Update changlog with release date

kevcenteno · kevcenteno · commit bc544b256f06 · 2021-08-26T11:06:30.000-04:00
diff --git a/HISTORY.rst b/HISTORY.rst
@@ -3,7 +3,7 @@
 History
 -------
 
-2.4.0
+2.4.0 (2021-08-26)
 ++++++++++++++++++
 
 * Added the following new values to the ``/payment/processor`` validation:
