Update changelog

CHANGELOG.md

@@ -117,6 +117,34 @@
   * Remove duplicated tests in cairo_run_test
   * BREAKING CHANGE: `MemorySegmentManager.get_memory_holes` now also receives the amount of builtins in the vm. Signature is now `pub fn get_memory_holes(&self, builtin_count: usize) -> Result<usize, MemoryError>`
 
+* Add missing hint on vrf.json lib [#1043](https://github.com/lambdaclass/cairo-rs/pull/1043):
+
+    `BuiltinHintProcessor` now supports the following hint:
+
+    ```python
+        from starkware.python.math_utils import div_mod
+
+        def split(a: int):
+            return (a & ((1 << 128) - 1), a >> 128)
+
+        def pack(z, num_bits_shift: int) -> int:
+            limbs = (z.low, z.high)
+            return sum(limb << (num_bits_shift * i) for i, limb in enumerate(limbs))
+
+        a = pack(ids.a, 128)
+        b = pack(ids.b, 128)
+        p = pack(ids.p, 128)
+        # For python3.8 and above the modular inverse can be computed as follows:
+        # b_inverse_mod_p = pow(b, -1, p)
+        # Instead we use the python3.7-friendly function div_mod from starkware.python.math_utils
+        b_inverse_mod_p = div_mod(1, b, p)
+
+        b_inverse_mod_p_split = split(b_inverse_mod_p)
+
+        ids.b_inverse_mod_p.low = b_inverse_mod_p_split[0]
+        ids.b_inverse_mod_p.high = b_inverse_mod_p_split[1]
+    ```
+
 * Add missing hints `NewHint#35` and `NewHint#36` [#975](https://github.com/lambdaclass/cairo-rs/issues/975)
 
     `BuiltinHintProcessor` now supports the following hint: