chore(deps): upgrade dependency furo to v2025

Author: renovate[bot]

pyproject.toml

@@ -54,7 +54,7 @@ speed = [
 
 [dependency-groups]
 docs = [
-    "furo==2024.8.6",
+    "furo==2025.9.25",
     "levenshtein==0.27.1",
     "myst-parser[linkify]==4.0.1",
     "sphinx==8.0.2",