Merge pull request #2476 from theupdateframework/dependabot/pip/cffi-1.16.0

build(deps): bump cffi from 1.15.1 to 1.16.0

Author: jku

requirements/pinned.txt

@@ -1,5 +1,5 @@
 certifi==2023.7.22        # via requests
-cffi==1.15.1              # via cryptography, pynacl
+cffi==1.16.0              # via cryptography, pynacl
 charset-normalizer==3.3.0 # via requests
 cryptography==41.0.4      # via securesystemslib
 idna==3.4                 # via requests