build(deps): Bump pytest-rerunfailures in /testing/plugins_integration (#12988)

Bumps [pytest-rerunfailures](https://github.com/pytest-dev/pytest-rerunfailures) from 14.0 to 15.0.
- [Changelog](https://github.com/pytest-dev/pytest-rerunfailures/blob/master/CHANGES.rst)
- [Commits](pytest-dev/pytest-rerunfailures@14.0...15.0)

---
updated-dependencies:
- dependency-name: pytest-rerunfailures
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

testing/plugins_integration/requirements.txt

@@ -7,7 +7,7 @@ pytest-django==4.9.0
 pytest-flakes==4.0.5
 pytest-html==4.1.1
 pytest-mock==3.14.0
-pytest-rerunfailures==14.0
+pytest-rerunfailures==15.0
 pytest-sugar==1.0.0
 pytest-trio==0.8.0
 pytest-twisted==1.14.3