fix: mkdocs-static-i18n 1.0.[45] not compatible with mkdocs-monorepo-plugin

This MR introduces:

• fix: mkdocs-static-i18n 1.0.[45] not compatible with mkdocs-monorepo-plugin, sticking to last pre 1.0 version until solved upstream.
• alternative approach !49 (closed) did not work

requirements.txt

@@ -3,7 +3,7 @@ mkdocs-material
 mkdocs-material-extensions
 # mkdocs-monorepo-plugin
 mkdocs-git-committers-plugin-2
-mkdocs-static-i18n
+mkdocs-static-i18n==0.56
 pymdown-extensions 
 mkdocs-git-committers-plugin-2 
 mkdocs-git-revision-date-localized-plugin
\ No newline at end of file