Uplift liquibase-core dependency

- upgraded from 4.21.0 to 4.28.0
- updated the release notes

Issue-ID: CPS-2326
Change-Id: I8734fd8005438ec682e8b2f458ec84bbabb4be56
Signed-off-by: mpriyank <priyank.maheshwari@est.tech>
diff --git a/docs/release-notes.rst b/docs/release-notes.rst
index 3007f5d..1652997 100644
--- a/docs/release-notes.rst
+++ b/docs/release-notes.rst
@@ -45,6 +45,7 @@
 Features
 --------
 3.5.2
+    - `CPS-2326 <https://jira.onap.org/browse/CPS-2326>`_ Uplift liquibase-core dependency to 4.28.0
 
 Version: 3.5.1
 ==============