build: bump scipy from 1.15.2 to 1.15.3

Bumps [scipy](https://github.com/scipy/scipy) from 1.15.2 to 1.15.3.
- [Release notes](https://github.com/scipy/scipy/releases)
- [Commits](scipy/scipy@v1.15.2...v1.15.3)

---
updated-dependencies:
- dependency-name: scipy
  dependency-version: 1.15.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pyproject.toml

@@ -38,7 +38,7 @@ tests = [
     "platformdirs==4.5.0",
     "regex==2025.11.3",
     "requests==2.30.0",
-    "scipy==1.15.2",
+    "scipy==1.15.3",
 ]
 
 doc = [