build(deps): bump scipy from 1.15.0 to 1.15.1 in /requirements (AtsushiSakai#1119)

Bumps [scipy](https://github.com/scipy/scipy) from 1.15.0 to 1.15.1.
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](scipy/scipy@v1.15.0...v1.15.1)

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

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

Author: dependabot[bot]

requirements/requirements.txt

@@ -1,5 +1,5 @@
 numpy == 2.2.1
-scipy == 1.15.0
+scipy == 1.15.1
 matplotlib == 3.10.0
 cvxpy == 1.5.3
 pytest == 8.3.4 # For unit test