Updated LTSA logo, added attributes to OCA, and updated Excel file with demo watermark

Signed-off-by: Ariane <ariane@northernblock.io>

Author: arbordeleau

OCABundles/schema/bcgov-digital-trust/LTSA/NewCredCredential/demo/LTSA-Vertical-Logo.jpg

@@ -2,12 +2,12 @@
     {
         "type": "aries/overlays/branding/1.0",
         "capture_base": "",
-        "logo": "https://raw.githubusercontent.com/bcgov/aries-oca-bundles/main/OCABundles/schema/bcgov-digital-trust/LTSA/NewCredCredential/demo/LTSA-Vertical-Logo.jpg",
+        "logo": "https://raw.githubusercontent.com/bcgov/aries-oca-bundles/main/OCABundles/schema/bcgov-digital-trust/LTSA/NewCredCredential/demo/LTSA-Vertical-Logo.png",
         "background_image_slice": "",
         "background_image": "",
+        "primary_attribute": "streetAddress",
+        "secondary_attribute": "parcelIdentifier",
         "primary_background_color": "#282B67",
-        "secondary_background_color": "#4CA747",
-        "primary_attribute": "",
-        "secondary_attribute": ""
+        "secondary_background_color": "#4CA747"
     }
 ]