fix: remove lfs usage of tree.xml and revert to biggest possible version

Sadly we can no longer update this file as it reached 100MB and that's the max size allowed on GitHub to have files, we could only increase it further by paying for the bandwidth

.github/workflows/on_icon_update_approved.yml

@@ -28,12 +28,10 @@ jobs:
         with:
           python-version: "3.11"
       - name: Install Dependencies
-        # lfs is needed as tree.xml has size > 100mb
         run: |
           pip install cairosvg pillow requests
           sudo apt-get update
           sudo apt-get install -y zopfli webp
-          git lfs install
       - name: Parse issue form
         id: parse_issue_form
         run: echo "ISSUE_FORM=$(python scripts/parse_issue_form.py)" >> "$GITHUB_OUTPUT"