Bump scipy from 1.8.0 to 1.8.1

Bumps [scipy](https://github.com/scipy/scipy) from 1.8.0 to 1.8.1.
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](scipy/scipy@v1.8.0...v1.8.1)

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

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

Author: dependabot[bot]

requirements_test.txt

@@ -1,7 +1,7 @@
 # base
 
 numpy>=1.18.5
-scipy==1.8.0
+scipy==1.8.1
 matplotlib==3.5.2
 scikit-learn>=0.22.2,<1.2.0
 six==1.16.0