The workflow release.yaml is referencing action metcalfc/changelog-generator using references v0.4.4. However this reference is missing the commit 14b159ac83976a0eb274f0a9a6c278c3f1b08e87 which may contain fix to the some vulnerability.
The vulnerability fix that is missing by actions version could be related to:
(1) CVE fix
(2) upgrade of vulnerable dependency
(3) fix to secret leak and others.
Please consider to update the reference to the action.