Update actions version in generator script

[Jayllyz]

Fix Node version warning when using generated workflow from generator script.

Proposed Changes

1. Update actions/checkout@v3 -> v4
2. Update stefanzweifel/git-auto-commit-action@v4 -> v5

Readiness Checklist

Author/Contributor

• Add entry to the CHANGELOG listing the change and linking to the corresponding issue (if appropriate)
• If documentation is needed for this change, has that been included in this pull request

Reviewing Maintainer

• Label as breaking if this is a large fundamental change
• Label as either automation, bug, documentation, enhancement, infrastructure, or performance

[echoix]

Looks ok!

[nvuillam]

Well played, thanks :)