chore: fix phpstan errors

[datamweb]

Description see : https://github.com/codeigniter4/shield/actions/runs/7579206531/job/20643033351?pr=1002

Checklist:

• [x] Securely signed commits
• [ ] Component(s) with PHPDoc blocks, only if necessary or adds value
• [ ] Unit testing, with >80% coverage
• [ ] User guide updated
• [ ] Conforms to style guide