Error thrown in consuming workflows regarding JSON output values quotes

**Describe the bug**

Quotes in a reusable workflow's JSON output value is triggering an error in consuming workflows.

**To Reproduce**

Steps to reproduce the behavior:
1. Create a reusable workflow with input and outputs, one of the output being this JSON value:

```yaml
outputs:
images:
value: '{"gcp": "${{ contains(inputs.registries, ''gcp'') && jobs.setup.outputs.gcp_image || '''' }}", "ecr": "${{ contains(inputs.registries, ''ecr'') && jobs.setup.outputs.ecr_image || '''' }}"}'
```

2. Use the first workflow in another workflow:

```yaml
build:
uses: acme/actions/.github/workflows/build.yaml@v1
```

3. See the following errors in the 2nd workflow file, but __at the line number__ from the 1st workflow file:

```
Unexpected symbol: 'gcp'''. Located at position 31 within expression: contains(inputs.registries, ''gcp'') && jobs.setup.outputs.gcp_image || '''' [Ln 72, Col 26]
Unexpected symbol: 'ecr'''. Located at position 31 within expression: contains(inputs.registries, ''ecr'') && jobs.setup.outputs.ecr_image || '''' [Ln 72, Col 120]
```

**Expected behavior**

The 1st workflow does not throw any errors when being run in Github Actions runners, so I'd expect no errors to be printed by this extension.

**Extension Version**

`v0.27.1`

Inizia riproducendo l’errore con il reusable workflow e il consuming workflow mostrati nell’issue, usando come riferimento la versione dell’estensione indicata. Traccia le diagnostici prodotti per le espressioni JSON tra virgolette e verifica che la sintassi valida di GitHub Actions non segnali più errori nel consuming workflow né li associ alla riga errata.

Scritto dal modello di indicizzazione a partire dal testo della issue.