[MNT] [Dependabot](deps-dev): Update scikit-base requirement from <0.…

…7.0 to <0.8.0 (sktime#5694)

Updates the requirements on
[scikit-base](https://github.com/sktime/skbase) to permit the latest
version.

pyproject.toml

@@ -56,7 +56,7 @@ dependencies = [
   "numpy<1.27,>=1.21",  # required for framework layer and base class logic
   "packaging",  # for estimator specific dependency parsing
   "pandas<2.2.0,>=1.1",  # pandas is the main in-memory data container
-  "scikit-base<0.7.0",  # base module for sklearn compatible base API
+  "scikit-base<0.8.0",  # base module for sklearn compatible base API
   "scikit-learn<1.4.0,>=0.24",  # required for estimators and framework layer
   "scipy<2.0.0,>=1.2",  # required for estimators and framework layer
 ]