Update index-state-hashes.nix

Author: IOHK

index-state-hashes.nix

@@ -2174,4 +2174,5 @@
   "2025-03-12T00:00:00Z" = "10c1433bafdc002b9c1a41282786f30a733aea6998a0570f63c94ae75af8d426";
   "2025-03-13T00:00:00Z" = "194659486645e2a574e22e9903ea23dbfbc3611c57f7c2b894e3f3d40f7aea67";
   "2025-03-14T00:00:00Z" = "994495e4583f3c6b6ec097e11d81859d385e3f522217f18d238e789fdf910fc5";
+  "2025-03-15T00:00:00Z" = "842b6546bdd94826a74c7061da03db0f961b9e46ec5422e239d1245c00f3707f";
 }