Bump wptserve from 3.0 to 4.0.1

Bumps [wptserve](https://github.com/MaximumZa/wptserve) from 3.0 to 4.0.1.
- [Commits](https://github.com/MaximumZa/wptserve/commits)

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

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

requirements/tests.txt

@@ -2,4 +2,4 @@ coveralls[yaml]==3.3.1
 pytest==7.4.3
 pytest-cov==4.1.0
 pytest-mock==3.11.1
-wptserve==3.0
+wptserve==4.0.1