/home/runner/work/hazelcast-cpp-client/hazelcast-cpp-client/./.github/actions/build-test/unix/action.yml: (Line: 39, Col: 96, Idx: 831) - (Line: 39, Col: 96, Idx: 831): Mapping values are not allowed in this context.

System.ArgumentException: Unexpected type '' encountered while reading 'action manifest root'. The type 'MappingToken' was expected. at GitHub.DistributedTask.ObjectTemplating.Tokens.TemplateTokenExtensions.AssertMapping(TemplateToken value, String objectDescription) at GitHub.Runner.Worker.ActionManifestManager.Load(IExecutionContext executionContext, String manifestFile)