updated uFragments version and using interfaces defined in the base repo

Author: aalavandhan

contracts/_interfaces/IAMPL.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-3.0-or-later
 pragma solidity 0.6.12;
 
-import "./IAMPL.sol";
+import "uFragments/contracts/interfaces/IAMPL.sol";
 
 interface IXCAmple is IAMPL {
     function globalAMPLSupply() external view returns (uint256);

contracts/_interfaces/IAmpleforth.sol

@@ -5,7 +5,7 @@ import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";
 import {SafeMath} from "@openzeppelin/contracts/math/SafeMath.sol";
 
 import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
-import {IAmpleforth} from "../../_interfaces/IAmpleforth.sol";
+import {IAmpleforth} from "uFragments/contracts/interfaces/IAmpleforth.sol";
 import {ITokenVault} from "../../_interfaces/ITokenVault.sol";
 import {IBridgeGateway} from "../../_interfaces/IBridgeGateway.sol";
 

contracts/_interfaces/IXCAmple.sol

@@ -9060,7 +9060,7 @@ typewiselite@~1.0.0:
 
 "uFragments@https://github.com/ampleforth/uFragments#master":
   version "0.0.1"
-  resolved "https://github.com/ampleforth/uFragments#6dde1cc08bc2febcf1b6b51e414727a35b66d11f"
+  resolved "https://github.com/ampleforth/uFragments#d64668761d6d39727a5c4f4b77f35a7d9fc2625b"
   dependencies:
     hardhat-gas-reporter "^1.0.4"
     openzeppelin-eth "2.0.2-standalone"