Backport environment updates from v4.3

.readthedocs.yaml

@@ -1,7 +1,15 @@
 version: 2
 
-formats: all
+build:
+  os: "ubuntu-24.04"
+  tools:
+    python: "3.13"
 
 python:
   install:
     - requirements: requirements.txt
+
+sphinx:
+  configuration: conf.py
+
+formats: all

conf.py

@@ -3,7 +3,7 @@
 # This file only contains a selection of the most common options. For a full
 # list see the documentation:
 # https://www.sphinx-doc.org/en/master/usage/configuration.html
-import sphinx_rtd_theme
+import sphinx_rtd_theme, time
 
 # -- Path setup --------------------------------------------------------------
 
@@ -19,7 +19,7 @@ import sphinx_rtd_theme
 # -- Project information -----------------------------------------------------
 
 project = '86Box'
-copyright = '2020-2022, 86Box Project'
+copyright = f'2020-{time.strftime("%Y")}, 86Box Project'
 author = '86Box Project'
 
 

requirements.txt

@@ -1,3 +1,3 @@
-Sphinx==4.3.0
-sphinx-rtd-theme==1.0.0
-linuxdoc==20211220
+Sphinx==7.4.7
+sphinx-rtd-theme==3.0.2
+linuxdoc==20240924