⬇️(markitdown) enforce old 0.0.2 version

Our base docker image (alpine) does not support magika dependency
because there is no wheel for onnxruntime for alpine...
It's complex to build and a bit hackish.

Switching to a slim (debian) base image, is a solution but trivy
scan detects CVEs. We need to check the CVEs don't regard our stack
but it's bit of work also.

For the time being, I pin the markitdown version to an old one...
This is sad, since a lot of bugs has been fixed.

src/backend/chat/agent_rag/document_converter/markitdown.py

@@ -12,7 +12,7 @@ class DocumentConverter:
 
     def __init__(self):
         """Initialize the DocumentConverter with MarkItDown."""
-        self.converter = MarkItDown(enable_plugins=False)
+        self.converter = MarkItDown()
 
     def convert_raw(  # pylint: disable=unused-argument
         self,

src/backend/pyproject.toml

@@ -50,7 +50,7 @@ dependencies = [
     "jsonschema==4.24.0",
     "lxml==5.4.0",
     "markdown==3.8",
-    "markitdown[pptx,docx,xlsx,xls,pdf,outlook]==0.1.2",
+    "markitdown==0.0.2",
     "mozilla-django-oidc==4.0.1",
     "nested-multipart-parser==1.5.0",
     "pydantic==2.11.7",