chore: update v4-core reference

This assumes Uniswap/v4-core#964 has been merged.

Author: ccashwell

src/V4Router.sol

@@ -2,6 +2,7 @@
 pragma solidity 0.8.26;
 
 import {IPoolManager} from "@uniswap/v4-core/src/interfaces/IPoolManager.sol";
+import {PoolOperation} from "@uniswap/v4-core/src/types/PoolOperation.sol";
 import {BalanceDelta} from "@uniswap/v4-core/src/types/BalanceDelta.sol";
 import {PoolKey} from "@uniswap/v4-core/src/types/PoolKey.sol";
 import {Currency} from "@uniswap/v4-core/src/types/Currency.sol";
@@ -160,7 +161,7 @@ abstract contract V4Router is IV4Router, BaseActionsRouter, DeltaResolver {
         unchecked {
             BalanceDelta delta = poolManager.swap(
                 poolKey,
-                IPoolManager.SwapParams(
+                PoolOperation.SwapParams(
                     zeroForOne, amountSpecified, zeroForOne ? TickMath.MIN_SQRT_PRICE + 1 : TickMath.MAX_SQRT_PRICE - 1
                 ),
                 hookData