Depreciated Node.js and commands versions in GitHub workflows.

[Adity20]

Describe the bug The current github action workflows are using depreciated Node.js versions and also some of the commands like save-state.

To Reproduce Steps to reproduce the behavior:

1. Go to 'Actions' tab in repositry
2. Click on Any triggered worflow
3. Scroll down to 'Annotations'
4. See warnings

Expected behavior Using Node.js 20 version and using environment files as save-state command is deprecated.

Screenshots

Branch Both master and develop

Environment (please complete the following information):

• OS: Linux and windows
• Version [e.g. 22]
• Python version [e.g. 3.8]
• Are you running slips in docker or locally? docker
• Docker version (if running slips in docker) [e.g. 20.10.22]
• Slips docker image used (if running slips in docker) [e.g. macosm1-image, macosm1-P2P-image, ubuntu-image, dependency-image]

Additional context Add any other context about the problem here.