Updates timelock delay

src/gov-action-contracts/AIPs/CoreGovTimelockUpdateDelay.sol

@@ -0,0 +1,22 @@
+// SPDX-License-Identifier: Apache-2.0
+pragma solidity 0.8.16;
+
+import "../address-registries/L2AddressRegistryInterfaces.sol";
+
+/// @notice Updates the delay of the core gov timelock to 8 days
+contract CoreGovTimelockUpdateDelayEightDayAction {
+    ICoreGovTimelockGetter public immutable govAddressRegistry;
+    uint256 public constant delay = 86400 * 8;
+
+    constructor(ICoreGovTimelockGetter _govAddressRegistry) {
+        govAddressRegistry = _govAddressRegistry;
+    }
+
+    function perform() external {
+        govAddressRegistry.coreGovTimelock().updateDelay(delay);
+        require(
+            govAddressRegistry.coreGovTimelock().getMinDelay() == delay,
+            "CoreGovTimelockUpdateDelayAction: Timelock delay"
+        );
+    }
+}