chore(deps-dev): update scikit-learn requirement (#85)

Updates the requirements on [scikit-learn](https://github.com/scikit-learn/scikit-learn) to permit the latest version.
- [Release notes](https://github.com/scikit-learn/scikit-learn/releases)
- [Commits](scikit-learn/scikit-learn@1.5.0...1.8.0)

---
updated-dependencies:
- dependency-name: scikit-learn
  dependency-version: 1.8.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

pyproject.toml

@@ -29,7 +29,7 @@ dev = [
   "build>=1.2.2,<1.4.0",
   "ruff>=0.12.2,<0.15.0",
   "sphinx>=7.3.7,<8.2.0",
-  "scikit-learn>=1.5,<1.8",
+  "scikit-learn>=1.5,<1.9",
   "pre-commit>=4.0.1,<4.6.0"
 ]
 
@@ -46,7 +46,7 @@ dev-dependencies = [
   "build>=1.2.2,<1.4.0",
   "ruff>=0.12.2,<0.15.0",
   "sphinx>=7.3.7,<8.2.0",
-  "scikit-learn>=1.5,<1.8",
+  "scikit-learn>=1.5,<1.9",
   "pre-commit>=4.0.1,<4.6.0"
 ]