Bump sphinx-substitution-extensions from 2024.10.17 to 2025.1.2

Bumps [sphinx-substitution-extensions](https://github.com/adamtheturtle/sphinx-substitution-extensions) from 2024.10.17 to 2025.1.2.
- [Release notes](https://github.com/adamtheturtle/sphinx-substitution-extensions/releases)
- [Changelog](https://github.com/adamtheturtle/sphinx-substitution-extensions/blob/main/CHANGELOG.rst)
- [Commits](adamtheturtle/sphinx-substitution-extensions@2024.10.17...2025.01.02)

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

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

pyproject.toml

@@ -70,7 +70,7 @@ optional-dependencies.dev = [
     "shfmt-py==3.7.0.1",
     "sphinx==8.1.3",
     "sphinx-copybutton==0.5.2",
-    "sphinx-substitution-extensions==2024.10.17",
+    "sphinx-substitution-extensions==2025.1.2",
     "sphinxcontrib-spelling==8.0.1",
     "sybil==9.0.0",
     "types-requests==2.32.0.20241016",