Add changelog entry

Signed-off-by: Jerry Yu <jerry.h.yu@arm.com>
diff --git a/ChangeLog.d/fix_tls13_session_resumption_fail_when_hostname_is_not_localhost.txt b/ChangeLog.d/fix_tls13_session_resumption_fail_when_hostname_is_not_localhost.txt
new file mode 100644
index 0000000..4a4d535
--- /dev/null
+++ b/ChangeLog.d/fix_tls13_session_resumption_fail_when_hostname_is_not_localhost.txt
@@ -0,0 +1,4 @@
+Bugfix
+    * Fix TLS 1.3 session reumption fail. Fixes #6488.
+    * Add configuration check to exclude TLS 1.3 optional authentication of
+      client.