Use checksummed address

Author: OGPoyraz

e2e/specs/confirmations-redesigned/signatures/alert-system.spec.js

@@ -21,7 +21,7 @@ const typedSignRequestBody = {
       { type: 'string', name: 'Message', value: 'Hi, Alice!' },
       { type: 'uint32', name: 'A number', value: '1337' },
     ],
-    '0x76cf1cdd1fcc252442b50d6e97207228aa4aefc3',
+    '0x76cf1CdD1fcC252442b50D6e97207228aA4aefC3',
   ],
   origin: 'localhost',
 };