feat: update SDK so it has Sepolia integration (#139)

# Description
Adds sepolia compatibility

# Changes
Updates the SDK to a version that has Sepolia integrated.


<img width="1112" alt="image"
src="https://github.com/cowprotocol/watch-tower/assets/2352112/c6fa6c09-4772-495a-8727-cf06dd655247">

package.json

@@ -46,7 +46,7 @@
   "dependencies": {
     "@commander-js/extra-typings": "^11.0.0",
     "@cowprotocol/contracts": "^1.4.0",
-    "@cowprotocol/cow-sdk": "^4.0.3",
+    "@cowprotocol/cow-sdk": "^4.1.0",
     "ajv": "^8.12.0",
     "ajv-formats": "^2.1.1",
     "chalk": "^4.1.2",

yarn.lock

@@ -476,10 +476,10 @@
   resolved "https://registry.yarnpkg.com/@cowprotocol/contracts/-/contracts-1.4.0.tgz#e93e5f25aac76feeaa348fa57231903274676247"
   integrity sha512-XLs3SlPmXD4lbiWIO7mxxuCn1eE5isuO6EUlE1cj17HqN/wukDAN0xXYPx6umOH/XdjGS33miMiPHELEyY9siw==
 
-"@cowprotocol/cow-sdk@^4.0.3":
-  version "4.0.3"
-  resolved "https://registry.yarnpkg.com/@cowprotocol/cow-sdk/-/cow-sdk-4.0.3.tgz#bd4da3e1821c33e6f5a29e04786aaa16c346bb02"
-  integrity sha512-bEGpHwfFpUv4he5kH99gmmJU1kZaqRH4JUCeFqIzZAxey86i+qLzVS00r3GDw5o/tKYY/0677hgusH2srr8MZw==
+"@cowprotocol/cow-sdk@^4.1.0":
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/@cowprotocol/cow-sdk/-/cow-sdk-4.1.0.tgz#3707d53ac778470814e6395f0beefdad76dc8cc1"
+  integrity sha512-Ps5VmegGF3yi0u6midj1offs4MvtBX8u6SHrSNoCzQsuQ5re+41OfRswZsB1Xp+3kxe1JFtFtq6oa7fT6fE7sw==
   dependencies:
     "@cowprotocol/contracts" "^1.4.0"
     "@ethersproject/abstract-signer" "^5.7.0"