Bump scipy from 1.9.2 to 1.9.3 in /extra_requirements

Bumps [scipy](https://github.com/scipy/scipy) from 1.9.2 to 1.9.3.
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](scipy/scipy@v1.9.2...v1.9.3)

---
updated-dependencies:
- dependency-name: scipy
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

extra_requirements/requirements-tests.txt

@@ -21,5 +21,5 @@ pytest-xdist==2.5.0
 pytest_notebook==0.8.0
 wimprates==0.4.1
 scipy==1.6.0; python_version<='3.7'
-scipy==1.9.2; python_version>'3.7'
+scipy==1.9.3; python_version>'3.7'
 git+https://github.com/JoranAngevaare/Milky_Way_mass_profile