feat: new automation tests for accounts API (#163)

# What ❔

- new API integration tests to cover account API functionality

**_List of test cases for automation:_**

- [x] [[Account API] /api?module=account&action=txlistinternal&address=
response returns
elements](https://allure.matterlabs.dev/project/11/test-cases/1852?treeId=22)
- [x] [[Account API]
/api?module=account&action=getminedblocks](https://allure.matterlabs.dev/project/11/test-cases/1807?treeId=22)
- [x] [[Account API] /api?module=account&action=tokentx response returns
elements](https://allure.matterlabs.dev/project/11/test-cases/1805?treeId=22)
- [x] [[Account API] /api?module=account&action=txlistinternal response
returns
elements](https://allure.matterlabs.dev/project/11/test-cases/1804?treeId=22)
- [x] [[Account API] /api?module=account&action=tokennfttx response
returns
elements](https://allure.matterlabs.dev/project/11/test-cases/1806?treeId=22)

## Why ❔

- to increase coverage of the automation test suite and cover accounts
API part

## Checklist


- [ +] PR title corresponds to the body of PR (we generate changelog
entries from PRs).
- [ +] Tests for the changes have been added / updated.
- [ -] Documentation comments have been added / updated.