Updated changelog.

See #512

Author: christophstrobl

src/main/resources/changelog.txt

@@ -1,6 +1,15 @@
 Spring Data R2DBC Changelog
 ===========================
 
+Changes in version 1.2.3 (2021-01-13)
+-------------------------------------
+* #523 - Update copyright year to 2021.
+* #519 - Returning interface implemented by domain type leads to NullPointerException.
+* #518 - IgnoreCase works only if a String property can be resolved to a column.
+* #515 - Fix typo in changelog.
+* #514 - Reference Docs: typo on firstname.
+
+
 Changes in version 1.2.2 (2020-12-09)
 -------------------------------------
 * #505 - Wrong documentation description for AfterSaveCallback.
@@ -382,5 +391,6 @@ Changes in version 1.0.0.M1 (2018-12-12)
 
 
 
+