Update GitHub Actions to Latest Stable Versions

[PixelPil0t1]

Changes Updates actions/setup-node from v3 to v4 in: .github/composite-actions/setup/action.yml Updates actions/checkout from v3 to v4 in multiple workflow files: .github/workflows/lint.yml .github/workflows/prettier.yml .github/workflows/slither.yml References actions/setup-node@v4: https://github.com/actions/setup-node/releases/tag/v4.4.0 actions/checkout@v4: https://github.com/actions/checkout/releases/tag/v4.2.2

Summary by CodeRabbit

• Chores
  • Updated GitHub Actions workflows to use the latest versions of setup and checkout actions for improved reliability and support. No changes to workflow logic or configuration parameters.