Bump testfixtures from 7.0.4 to 7.1.0

Bumps [testfixtures](https://github.com/Simplistix/testfixtures) from 7.0.4 to 7.1.0.
- [Release notes](https://github.com/Simplistix/testfixtures/releases)
- [Changelog](https://github.com/simplistix/testfixtures/blob/master/CHANGELOG.rst)
- [Commits](simplistix/testfixtures@7.0.4...7.1.0)

---
updated-dependencies:
- dependency-name: testfixtures
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

setup.py

@@ -58,7 +58,7 @@
             "coverage==7.1.0",
             "pytest<7.3",
             "pytest-cov==4.0.0",
-            "testfixtures==7.0.4",
+            "testfixtures==7.1.0",
             "tox==4.4.5",
             "flake8==6.0.0",
             "flake8-docstrings==1.7.0",