fix: fix incorrect handling of contract_address as an array

[brawncode]

Pull Request type

• Refactoring (no functional changes, no API changes)

What is the current behavior?

I noticed that contract_address was being treated as an array in the code, which caused an issue when trying to access contract_address[0].

Since contract_address is actually a string, I've updated the code to correctly check its truthiness.

The fix ensures the test works as intended.

expect(deployResult.contract_address).toBeTruthy();

This change resolves the issue and aligns with the expected data type.

Does this introduce a breaking change?

no

Other information