test(sendEmail): make allowDeposit tests robust for variable task costs

Author: abbesBenayache

tests/e2e/sendEmail.test.ts

@@ -704,10 +704,8 @@ describe('web3mail.sendEmail()', () => {
           error.cause?.message ||
           error.cause ||
           error.errorCause;
-        expect(causeMsg).toBe(
-          `Cost per task (${
-            dataPricePerAccess + workerpoolprice
-          }) is greater than requester account stake (0). Orders can't be matched. If you are the requester, you should deposit to top up your account`
+        expect(String(causeMsg)).toContain(
+          "is greater than requester account stake (0). Orders can't be matched. If you are the requester, you should deposit to top up your account"
         );
       },
       3 * MAX_EXPECTED_BLOCKTIME + MAX_EXPECTED_WEB2_SERVICES_TIME