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`

Start by reproducing the error with the reusable workflow and consuming workflow shown in the issue, using the reported extension version as a baseline. Trace the diagnostics produced for quoted JSON expressions and verify that valid GitHub Actions syntax no longer reports errors in the consuming workflow or maps them to the wrong line.

Written by the indexing model from the issue text.