/home/runner/work/kohei.dev/kohei.dev/./.github/actions/vercel-prebuild/action.yml (Line: 14, Col: 12): Unexpected symbol: '"{"'. Located at position 1 within expression: "{"

GitHub.DistributedTask.ObjectTemplating.TemplateValidationException: The template is not valid. /home/runner/work/kohei.dev/kohei.dev/./.github/actions/vercel-prebuild/action.yml (Line: 14, Col: 12): Unexpected symbol: '"{"'. Located at position 1 within expression: "{" at GitHub.DistributedTask.ObjectTemplating.TemplateValidationErrors.Check() at GitHub.Runner.Worker.ActionManifestManager.ConvertRuns(IExecutionContext executionContext, TemplateContext templateContext, TemplateToken inputsToken, String fileRelativePath, MappingToken outputs) at GitHub.Runner.Worker.ActionManifestManager.Load(IExecutionContext executionContext, String manifestFile)