Merge pull request #7140 from docker/dependabot/pip/cached-property-1.5.1

Bump cached-property from 1.3.0 to 1.5.1

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'