Bump importlib-metadata from 0.17 to 0.18 in /requirements
Bump importlib-metadata from 0.17 to 0.18 in /requirements

Bumps [importlib-metadata](http://importlib-metadata.readthedocs.io/) from 0.17 to 0.18.

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
glogiotatidis/basket,glogiotatidis/basket,glogiotatidis/basket