Fix GCC13 compiler errors

* Removed namespace arm_compute::utils::requires to fix the build error
  ‘requires’ is a keyword in C++20 [-Wc++20-compat]

* Added missing includes for cstdint.h

* Resolves MLCE-1040

Change-Id: I08842a273a4422f8e9b10daded680f521efe26e0
Signed-off-by: Pablo Marquez Tello <pablo.tello@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/9388
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Viet-Hoa Do <viet-hoa.do@arm.com>
Reviewed-by: Jakub Sujak <jakub.sujak@arm.com>
Benchmark: Arm Jenkins <bsgcomp@arm.com>
diff --git a/tests/validation/reference/Conv3D.cpp b/tests/validation/reference/Conv3D.cpp
index 706059d..e4010a5 100644
--- a/tests/validation/reference/Conv3D.cpp
+++ b/tests/validation/reference/Conv3D.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021 Arm Limited.
+ * Copyright (c) 2021, 2023 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -25,7 +25,7 @@
 
 #include "arm_compute/core/utils/misc/ShapeCalculator.h"
 #include "arm_compute/core/utils/quantization/AsymmHelpers.h"
-#include "support/Requires.h"
+#include "support/AclRequires.h"
 #include "tests/validation/reference/UtilsQuantizedAsymm.h"
 
 // Source/Destination Tensor shape indices (N D H W C)
@@ -257,4 +257,4 @@
 } // namespace reference
 } // namespace validation
 } // namespace test
-} // namespace arm_compute
\ No newline at end of file
+} // namespace arm_compute