Bump importlib-metadata from 1.5.2 to 1.6.0

Bumps [importlib-metadata](http://importlib-metadata.readthedocs.io/) from 1.5.2 to 1.6.0.

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

Author: dependabot-preview[bot]

sample_python_project/requirements.txt

@@ -1,6 +1,6 @@
 # Pytest dependency tree for pytest==5.4.1
 attrs==19.3.0
-importlib-metadata==1.5.2
+importlib-metadata==1.6.0
 more-itertools==8.2.0
 packaging==20.3
 pluggy==0.13.1