Add py::gil_scoped_release before mkl_lapack::orgqr() call

Author: antonwolfy

dpnp/backend/extensions/lapack/orgqr.cpp

@@ -87,6 +87,10 @@ static sycl::event orgqr_impl(sycl::queue &exec_q,
 
     sycl::event orgqr_event;
     try {
+        // Release GIL to avoid serialization of host task
+        // submissions to the same queue in OneMKL
+        py::gil_scoped_release lock{};
+
         scratchpad = sycl::malloc_device<T>(scratchpad_size, exec_q);
 
         orgqr_event = mkl_lapack::orgqr(