Merge pull request #97 from Loop3D/dependabot/pip/requirements/sphinx-rtd-theme-gte-3.1.0

chore(deps): update sphinx-rtd-theme requirement from >=2 to >=3.1.0 in /requirements

Author: lachlangrose

requirements/documentation.txt

@@ -4,4 +4,4 @@
 myst-parser[linkify]>=5.1.0
 sphinx-autobuild>=2024
 sphinx-copybutton>=0.5,<1
-sphinx-rtd-theme>=2
+sphinx-rtd-theme>=3.1.0