Bump cffi from 1.14.4 to 1.14.5

Bumps [cffi](https://github.com/python-cffi/release-doc) from 1.14.4 to 1.14.5.
- [Release notes](https://github.com/python-cffi/release-doc/releases)
- [Commits](https://github.com/python-cffi/release-doc/commits)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements-pinned.txt

@@ -1,5 +1,5 @@
 certifi==2020.12.5        # via requests
-cffi==1.14.4              # via cryptography, pynacl
+cffi==1.14.5              # via cryptography, pynacl
 chardet==4.0.0            # via requests
 cryptography==3.4.5       ; python_version >= '3' # via securesystemslib
 cryptography==3.3.2       ; python_version < '3' # via securesystemslib