pin sphinx-multiversion to 0.2.4

Author: bmos

requirements-dev.txt

@@ -14,7 +14,7 @@ testfixtures==8.3.0
 # Docs Requirements
 myst-parser==3.0.1;python_version<'3.10'
 myst-parser==4.0.1;python_version>='3.10'
-sphinx-multiversion
+sphinx-multiversion==0.2.4
 sphinx-rtd-theme==3.0.2
 Sphinx==7.4.7;python_version<'3.10'
 Sphinx==8.1.3;python_version>='3.10'