Bump cached-property from 1.3.0 to 1.5.1

Bumps [cached-property](https://github.com/pydanny/cached-property) from 1.3.0 to 1.5.1.
- [Release notes](https://github.com/pydanny/cached-property/releases)
- [Changelog](https://github.com/pydanny/cached-property/blob/master/HISTORY.rst)
- [Commits](https://github.com/pydanny/cached-property/compare/1.3.0...1.5.1)

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

requirements.txt

@@ -1,6 +1,6 @@
 backports.shutil_get_terminal_size==1.0.0
 backports.ssl-match-hostname==3.5.0.1; python_version < '3'
-cached-property==1.3.0
+cached-property==1.5.1
 certifi==2019.11.28
 chardet==3.0.4
 colorama==0.4.3; sys_platform == 'win32'