west.yml: update mbedtls to latest stable release

Bump mbedTLS version to 2.16.4

Origin: ARMmbed/mbedTLS
License: Apache-2.0
URL: https://github.com/ARMmbed/mbedtls/releases/tag/mbedtls-2.16.4
commit: 39e2c0eeb6501980764793e8d54c49c0a42bde48

Signed-off-by: Flavio Ceolin <[email protected]>

Author: Flavio Ceolin

west.yml

@@ -74,7 +74,7 @@ manifest:
       revision: 74fc2e753a997bd71cefa34dd9c56dcb954b42e2
       path: modules/lib/gui/lvgl
     - name: mbedtls
-      revision: 3776c158fe138a72c97c187e4d31c81c37884be9
+      revision: cf7020eb4c7ef93319f2d6d2403a21e12a879bf6
       path: modules/crypto/mbedtls
     - name: mcuboot
       revision: 36e9029ff01d1e64a77d2e2a0bb9e2cc75ab97c8