CHORE: Bump sphinx from 5.3.0 to 8.0.2

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.3.0 to 8.0.2.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/v8.0.2/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v5.3.0...v8.0.2)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

pyproject.toml

@@ -87,7 +87,7 @@ doc = [
     "recommonmark",
     "scikit-rf>=0.30.0,<1.2",
     "Sphinx==5.3.0; python_version == '3.7'",
-    "Sphinx>=7.1.0,<7.4; python_version > '3.7'",
+    "Sphinx>=7.1.0,<8.1; python_version > '3.7'",
     "sphinx-autobuild==2021.3.14; python_version == '3.7'",
     "sphinx-autobuild==2021.3.14; python_version == '3.8'",
     "sphinx-autobuild==2024.4.16; python_version > '3.8'",
@@ -105,7 +105,7 @@ doc-no-examples = [
     "numpydoc>=1.5.0,<1.8",
     "recommonmark",
     "Sphinx==5.3.0; python_version == '3.7'",
-    "Sphinx>=7.1.0,<7.4; python_version > '3.7'",
+    "Sphinx>=7.1.0,<8.1; python_version > '3.7'",
     "sphinx-autobuild==2021.3.14; python_version == '3.7'",
     "sphinx-autobuild==2021.3.14; python_version == '3.8'",
     "sphinx-autobuild==2024.4.16; python_version > '3.8'",