chore(docs): ⬆️ upgrade Sphinx and related dependencies to latest versions (#3067)

* ⬆️ chore(docs): upgrade Sphinx and related dependencies to latest versions

* ➖ Remove sphinxcontrib_trio dependency

* ➕ Add back sphinxcontrib_trio because it got updated

* 📝 CHANGELOG.md

Author: Paillat-dev

CHANGELOG.md

@@ -21,6 +21,8 @@ These changes are available on the `master` branch, but have not yet been releas
 
 - Updated `Role.is_assignable()` to also check whether the bot has the `MANAGE_ROLES`
   permission. ([#3048](https://github.com/Pycord-Development/pycord/pull/3048))
+- Updated the docs' Sphinx version to v9.
+  ([#3067](https://github.com/Pycord-Development/pycord/pull/3067))
 
 ### Fixed
 

requirements/docs.txt

@@ -1,11 +1,11 @@
-sphinx==8.2.3
-sphinxcontrib_trio==1.1.2
+sphinx==9.1.0
+sphinxcontrib_trio==1.2.0
 sphinxcontrib-websupport==2.0.0
 myst-parser[linkify]==5.0.0
 sphinxext-opengraph==0.13.0
 sphinx-copybutton==0.5.2
-furo==2024.8.6
-sphinx-autodoc-typehints==3.5.2
+furo==2025.12.19
+sphinx-autodoc-typehints==3.6.2
 sphinx-intl==2.3.2
 typing_extensions==4.15.0
 levenshtein==0.27.3