build(deps): bump pytest-trio in /testing/plugins_integration

Bumps [pytest-trio](https://github.com/python-trio/pytest-trio) from 0.6.0 to 0.7.0.
- [Release notes](https://github.com/python-trio/pytest-trio/releases)
- [Commits](python-trio/pytest-trio@v0.6.0...v0.7.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

testing/plugins_integration/requirements.txt

@@ -9,7 +9,7 @@ pytest-html==2.1.1
 pytest-mock==3.3.1
 pytest-rerunfailures==9.1.1
 pytest-sugar==0.9.4
-pytest-trio==0.6.0
+pytest-trio==0.7.0
 pytest-twisted==1.13.2
 twisted==20.3.0
 pytest-xvfb==2.0.0