Updated changelog.

See #1093

Author: christophstrobl

src/main/resources/changelog.txt

@@ -1,6 +1,10 @@
 Spring Data Cassandra Changelog
 ===============================
 
+Changes in version 3.2.0-M4 (2021-02-18)
+----------------------------------------
+
+
 Changes in version 3.1.5 (2021-02-18)
 -------------------------------------
 
@@ -1482,5 +1486,6 @@ Changes in version 1.0.0.M1 (2014-03-31)
 
 
 
+