Fix test

Author: dishaprakash

tests/unit_tests/v2/test_async_pg_vectorstore_search.py

@@ -354,9 +354,9 @@ async def test_asimilarity_search_image(
         results = await image_vs.asimilarity_search_image(image_uris[0], k=1)
         assert len(results) == 1
         assert results[0].metadata["image_uri"] == image_uris[0]
-        results = await image_vs.asimilarity_search_image(image_uris[3], k=1)
+        results = await image_vs.asimilarity_search_image(image_uris[2], k=1)
         assert len(results) == 1
-        assert results[0].metadata["image_uri"] == image_uris[3]
+        assert results[0].metadata["image_uri"] == image_uris[2]
 
     async def test_similarity_search_image(
         self, image_vs: AsyncPGVectorStore, image_uris: list[str]