Bump importlib-metadata from 1.3.0 to 1.5.0 (from PR #1067)
Bump importlib-metadata from 1.3.0 to 1.5.0 (from PR #1067)

Bumps [importlib-metadata](http://importlib-metadata.readthedocs.io/) from 1.3.0 to 1.5.0.

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

mozilla/ichnaea,mozilla/ichnaea,mozilla/ichnaea,mozilla/ichnaea