chore(deps): update dependency sphinx-markdown-builder to v0.6.9

i18n/requirements.txt

@@ -21,7 +21,7 @@ setuptools==80.9.0
 snowballstemmer==3.0.1
 Sphinx==9.0.3
 sphinx-intl==2.3.2
-sphinx-markdown-builder==0.6.8
+sphinx-markdown-builder==0.6.9
 sphinxcontrib-applehelp==2.0.0
 sphinxcontrib-devhelp==2.0.0
 sphinxcontrib-htmlhelp==2.1.0