Upgrade all GitHub workflow actions currently using node12(deprecated)

[123MwanjeMike]

What were you trying to achieve?
Running the repo workflows

What are the expected results?
Workflows are expected to run without any warnings

What are the received results?
Workflows were running with save-state and set-output deprecation warnings

Additional context

• An example of a GitHub Action workflow run with the save-state warning is here
• An example of a GitHub Action workflow run with the set-output warning is here
• This article may provide some context on this.
• Sample places where the GitHub actions to update are used include:

  • AirQo-api/.github/workflows/remove-deploy-previews.yml

    Line 18 in ec9b796

    uses: ASzc/change-string-case-action@v2

  • AirQo-api/.github/workflows/deploy-apis-to-staging.yml

    Line 393 in ec9b796

    uses: docker/setup-buildx-action@v1

• You can also update all other GitHub actions you notice to be outdated apart from Wandalen/wretry.action@v1.0.36
• The ideal solution addresses this issue in all the workflows

[Baalmart]

@123MwanjeMike ,

• Aren't these Github Actions upgrades the ones which brought us problems sometime back? The time when all PRs refused to be deployed after merge?
• Anyway, just requesting that we apply some caution as we go about this.