Update pytest-rerunfailures requirement from ==14.* to ==16.* (#1020)

Updates the requirements on [pytest-rerunfailures](https://github.com/pytest-dev/pytest-rerunfailures) to permit the latest version.
- [Changelog](https://github.com/pytest-dev/pytest-rerunfailures/blob/master/CHANGES.rst)
- [Commits](pytest-dev/pytest-rerunfailures@14.0...16.1)

---
updated-dependencies:
- dependency-name: pytest-rerunfailures
  dependency-version: '16.1'
  dependency-type: direct:production
...

Signed-off-by: Mario Behling <mb@mariobehling.de>

Author: dependabot[bot]

pyproject.toml

@@ -120,7 +120,7 @@ dev = [
             'pytest-django==4.*',
             'pytest-xdist==3.6.*',
             'pytest-mock==3.14.*',
-            'pytest-rerunfailures==14.*',
+            'pytest-rerunfailures==16.*',
             'responses',
             'potypo',
             'freezegun',