Updated changelog.

See #1006

Author: christophstrobl

src/main/resources/changelog.txt

@@ -1,6 +1,14 @@
 Spring Data Cassandra Changelog
 ===============================
 
+Changes in version 3.1.3 (2021-01-13)
+-------------------------------------
+* DATACASS-835 - Update CI jobs with Docker Login.
+* #1079 - Defer non-constant assert messages to improve performance.
+* #1078 - Update copyright year to 2021.
+* #182 - Update repository after GitHub issues migration.
+
+
 Changes in version 3.1.2 (2020-12-09)
 -------------------------------------
 * DATACASS-834 - Default to datacenter1 in AbstractSessionConfiguration.getLocalDataCenter.
@@ -1417,5 +1425,6 @@ Changes in version 1.0.0.M1 (2014-03-31)
 
 
 
+