Update index.json

add more showcases

Author: kfahn22

content/pages/homepage/index.json

@@ -52,9 +52,9 @@
       "challenges/12-lorenz-attractor/showcase/contribution6.json",
       "webgl/2-3d-geometries/showcase/contribution-1710194815.json",
       "challenges/c1-maurer-rose/showcase/contribution-1710195131.json",
-      "",
-      "",
-      ""
+      "challenges/182-apollonian-gasket/showcase/contribution-1710583324.json",
+      "content/videos/challenges/182-apollonian-gasket/showcase/contribution-1710588878.json",
+      "content/videos/challenges/130-drawing-with-fourier-transform-and-epicycles/showcase/contribution-1710564498.json"
     ],
     "showcaseCta": {
       "text": "Want to see more?",