chore: update GitHub actions in CI workflows

[defiberrys]

Description

Updates actions/checkout@v3 to actions/checkout@v5 across CI workflows.

Upgrade to actions/checkout@v5 for improved performance and stability.

Reference: Latest version: https://github.com/actions/checkout/releases/tag/v5.0.0

Type of change

• [ ] Docs change / dependency upgrade
• [x] Configuration / tooling changes
• [ ] Refactoring
• [x] Bug fix (non-breaking change which fixes an issue)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Requires changes in customer code