build(deps): bump sphinx from 8.0.2 to 8.1.3 (#351)

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

Author: dependabot[bot]

pyproject.toml

@@ -55,7 +55,7 @@ tests = [
     "regex==2024.9.11",
 ]
 doc = [
-    "Sphinx==8.0.2",
+    "Sphinx==8.1.3",
     "ansys-sphinx-theme[autoapi]==1.1.5",
     "build>= 0.10.0",
     "flit>=3.8.0",