Update changelog from 3.1.3

(cherry picked from commit d6d49e6d)

CHANGELOG.rst

@@ -6,8 +6,8 @@ All notable changes to this project will be documented in this file.
 The format is based on `Keep a Changelog`_,
 and this project adheres to `Semantic Versioning`_.
 
-Unreleased
-----------
+`3.1.3`_ – 2023-07-18
+---------------------
 
 Changes
 =======
@@ -38,13 +38,21 @@ Changed
 Fixed
 ~~~~~
 
+* GraphQL mutations did not return errors in case of exceptions.
+* Group GraphQL queries failed when queried by owner or member.
+* Nav submenu items could not be distinguished from regular ones.
+
+
+`3.1.3`_ – 2023-07-18
+---------------------
+
+Fixed
+~~~~~
+
 * [Docker] The build could silently continue even if frontend bundling failed, resulting
   in an incomplete AlekSIS frontend app.
-* GraphQL mutations did not return errors in case of exceptions.
 * Rendering of "simple" PDF templates failed when used with S3 storage.
 * Log messages on some loggers did not contain log message
-* Group GraphQL queries failed when queried by owner or member.
-* Nav submenu items could not be distinguished from regular ones.
 
 `3.1.2`_ - 2023-07-05
 ---------------------
@@ -1235,3 +1243,4 @@ Fixed
 .. _3.1: https://edugit.org/AlekSIS/official/AlekSIS-Core/-/tags/3.1
 .. _3.1.1: https://edugit.org/AlekSIS/official/AlekSIS-Core/-/tags/3.1.1
 .. _3.1.2: https://edugit.org/AlekSIS/official/AlekSIS-Core/-/tags/3.1.2
+.. _3.1.3: https://edugit.org/AlekSIS/official/AlekSIS-Core/-/tags/3.1.3