False Positive On fromJson in services Mapping Nodes

[neilime]

When job.services is provided by a dynamic variable parsed fromJson, it fails because it think that the result is scalar, but fromJson is able to return Mapping nodes

The following example shows the action lint error, but this workflow is working pretty good

https://rhysd.github.io/actionlint/#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

on:
  workflow_call:

jobs:
  prepare-variables:
    runs-on: ubuntu-latest
    outputs:
      tests-services: ${{ steps.tests-services.outputs.tests-services }}
    steps:
      - id: tests-services
        uses: actions/github-script@v4
        with:
          script: |
            const testsServices = {
                redis: {
                    image: "redislabs/redisearch:1.6.8",
                    ports: [6379],
                    env: {
                        TZ: "Europe/Paris",
                    },
                    options: "--entrypoint redis-server",
                }
            };

            core.setOutput('tests-services', JSON.stringify(testsServices));

  tests:
    name: Tests
    runs-on: ubuntu-latest
    needs: [prepare-variables]
    services: ${{ fromJSON(needs.prepare-variables.outputs.tests-services) }}
    container:
      image: test-image
    steps:
      - name: Run Tests
        run: make test