added the images in the posts so the posts look good and removed redundant uploads file

src/main/resources/data.sql

@@ -84,9 +84,9 @@ VALUES (1, 1);
 
 -- Insert posts
 INSERT INTO feed (post_image_url, post_title, post_description, post_time, user_id) VALUES
-    ('https://example.com/image1.jpg', 'Post 1', 'Description for post 1', '2024-12-07', 1),
-    ('https://example.com/image2.jpg', 'Post 2', 'Description for post 2', '2024-12-07', 2),
-    ('https://example.com/image3.jpg', 'Post 3', 'Description for post 3', '2024-12-07', 3);
+    ('uploads/36b2c38d-c9d5-4e14-a433-895a565d3abf_steve-johnson-D7AuHpLxLPA-unsplash.jpg', 'Post 1', 'Description for post 1', '2024-12-07', 1),
+    ('uploads/5720f047-a3ca-4d4e-ab20-343aae7cc485_premium_photo-1733514691627-e62171fc052c.avif', 'Post 2', 'Description for post 2', '2024-12-07', 2),
+    ('uploads/d0753820-30b3-429c-92c4-d82c910ba083_nicolas-jehly-0UU9-_1EMvM-unsplash.jpg', 'Post 3', 'Description for post 3', '2024-12-07', 3);
 
 -- Insert tags
 INSERT INTO tags (tag_name) VALUES