Update Changelog

CHANGES.rst

@@ -3,7 +3,7 @@ Changelog for Onadata
 
 ``* represents releases that introduce new migrations``
 
-v2.5.12(2021-11-19)
+v2.5.12(2021-11-29)
 -------------------
 
 - Ignore form permissions when an Export is from a public form
@@ -18,6 +18,12 @@ v2.5.12(2021-11-19)
 - Use auth user model for _submitted_by field stats query
   `PR #2167 <https://github.com/onaio/onadata/pull/2167>`_
   [@denniswambua]
+- Bump ona-oidc version to `86d8cd`
+  `PR #2169 <https://github.com/onaio/onadata/pull/2169>`_
+  [@DavisRayM]
+- Default response format to JSON for the Charts endpoint
+  `PR #2170 <https://github.com/onaio/onadata/pull/2170>`_
+  [@DavisRayM]
 
 v2.5.11(2021-11-01)
 -------------------