D:\a\wdl\wdl\./.github/actions/install-shellcheck\action.yaml (Line: 8, Col: 7): Unexpected value 'run'

GitHub.DistributedTask.ObjectTemplating.TemplateValidationException: The template is not valid. D:\a\wdl\wdl\./.github/actions/install-shellcheck\action.yaml (Line: 8, Col: 7): Unexpected value 'run' 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)