CleverCloud/clever-cloud-review-app/beta/action.yml (Line: 69, Col: 17): Unexpected symbol: '${{'. Located at position 1 within expression: ${{ inputs.region

GitHub.DistributedTask.ObjectTemplating.TemplateValidationException: The template is not valid. CleverCloud/clever-cloud-review-app/beta/action.yml (Line: 69, Col: 17): Unexpected symbol: '${{'. Located at position 1 within expression: ${{ inputs.region 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)