CHANGELOG: update to 4.0.0-rc4

Signed-off-by: William Roberts <william.c.roberts@intel.com>

CHANGELOG.md

@@ -3,7 +3,7 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/)
 
-## [4.0.0-rc3] - 2022-12-19
+## [4.0.0-rc4] - 2022-12-26
 ### Fixed:
   - tcti-ldr: Use heap instead of stack when tcti initialize
  - Fix usage of NULL pointer if Esys_TR_SetAuth is calles with ESYS_TR_NONE.
@@ -41,6 +41,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 - FAPI: fix NPD in ifapi_curl logging.
 - FAPI: Improve documentation fapi-profile
 - FAPI: Fix CURL HTTP handling.
+- FAPI: Return FAPI_RC_IO_ERROR if a policy does not exist in keystore.
 
 ### Added:
 - TPM version 1.59 support.