Merge pull request #9202 from open-webui/dependabot/pip/backend/dev/pymdown-extensions-10.14.2

build(deps): bump pymdown-extensions from 10.11.2 to 10.14.2 in /backend

backend/requirements.txt

@@ -57,7 +57,7 @@ einops==0.8.0
 ftfy==6.2.3
 pypdf==4.3.1
 fpdf2==2.8.2
-pymdown-extensions==10.11.2
+pymdown-extensions==10.14.2
 docx2txt==0.8
 python-pptx==1.0.0
 unstructured==0.15.9