chore: Update packaging_materials.txt (#6405)
chore: Update packaging_materials.txt (#6405)

I added translations in Bulgarian.
openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server,openfoodfacts/openfoodfacts-server