Fix unit test

ui/pages/settings/security-tab/__snapshots__/security-tab.test.js.snap

@@ -390,7 +390,7 @@ exports[`Security Tab should match snapshot 1`] = `
           <div
             class="settings-page__content-description"
           >
-            To improve user experience, we customize the activity tab with messages based on the smart contracts you interact with. MetaMask uses a service called 4byte.directory to decode data and show you a version of a smart contract that's easier to read. This helps reduce your chances of approving malicious smart contract actions, but can result in your IP address being shared.
+            We use 4byte.directory and Sourcify services to decode and display more readable transaction data. This helps you understand the outcome of pending and past transactions, but can result in your IP address being shared.
           </div>
         </div>
         <div