scientific-python/pytest-doctestplus: v1.7.1

<!-- Release notes generated using configuration in .github/release.yml at v1.7.1 --> What's Changed BUG: fix doctest_requires when constraint is present by @KostaIlic2 in https://github.com/scientific-python/pytest-doctestplus/pull/319 New Contributors @KostaIlic2 made their first contribution in https://github.com/scientific-python/pytest-doctestplus/pull/319 Full Changelog: https://github.com/scientific-python/pytest-doctestplus/compare/v1.7.0...v1.7.1