- update to 4.6.0, highlights below, for details check
  https://github.com/opencv/opencv/wiki/ChangeLog#version460
  * OpenCV project infrastructure migrating on GitHub Actions
    workflows for CI and release purposes
  * Added support for GCC 12, Clang 15
  * Added support for FFmpeg 5.0
  * DNN module patches:
    + Improved layers / activations / supported more models:
      - LSTM (+CUDA), resize (+ONNX13), Sign, Shrink, Reciprocal,
        depth2space, space2depth
      - fixes in Reduce, Slice, Expand
    + Disabled floating-point denormals processing #21521
    + Changed layer names in ONNX importer to support "output"
      entities properly
    + Added TIM-VX NPU backend support:
      https://github.com/opencv/opencv/wiki/TIM-VX-Backend-For-Running-OpenCV-On-NPU
    + Added Softmax parameter to ClassificationModel
    + Added audio speech recognition sample (C++) #21458
    + Intel® Inference Engine backend (OpenVINO):
      - added initial support for OpenVINO 2022.1 release
      - removed support of legacy API (dropped since 2020.3)
  * G-API module:
    + G-API framework:
      - Introduced a Grayscale image format support for
        cv::MediaFrame: #21511;
      - Enabeled .reshape() support in the CPU backend: #21669;
      - Fixed possible hang in streaming execution mode with constant
        inputs: #21567;
      - Introduced proper error/exception propagation in the
        asynchronous streaming execution mode: #21660;
      - Fixed new stream event handling: #21731.
    + Fluid backend:
      - Fixed horizontal pass in the Resize kernel, fixed Valgrind
        issues: #21144;
      - Extended Resize kernel with F32 version: #21678,
        added AVX: #21728.
      - Enabled dynamic dispatch for Split4 kernel: #21520;
      - Enabled dynamic dispatch for Merge3 kernel: #21529;
      - Added a SIMD version for DivC kernel: #21474;
      - Added a SIMD version for DivRC kernel: #21530;
      - Enabled dynamic dispatch for Add kernel: #21686;
      - Enabled dynamic dispatch for Sub kernel: #21746;
      - Added a SIMD version for ConvertTo kernel: #21777;
      - Fixed kernel matrix size for Sobel kernel: #21613.
    + Intel® OpenVINO™ inference backend:
      - Fixed NV12 format support for remote memory when OpenVINO
        remote context is used: #21424.
      - Implemented correct error handling in the backend: #21579.
      - Fixed ngraph warnings #21362.
    + OpenCV AI Kit backend:
      - Introduced a new backend to program OpenCV AI Kit boards via
        G-API. Currently the backend is in experimental state, but allows
        to build Camera+NN pipeline and supports heterogeneity (mixing
        with host-side code): #20785, #21504.
    + Media integration:
      - Enabled GPU inference with oneVPL and DirectX11 on Windows in
        Intel OpenVINO inference backend: #21232, #21618, #21658, #21687,
        #21688. Now GPU textures decoded by oneVPL decoder can be
        preprocessed and inferred on GPU with no extra host processing.
      - Enabled oneVPL support on Linux: #21883.
      - Extended GStreamer pipeline source with Grayscale image format
        support: #21560.
    + Python bindings:
      - Exposed GStreamer pipeline source in Python bindings: #20832.
      - Fixed Python bindings for CudaBufferPool, cudacodec and cudastereo
        modules in OpenCV Contrib.
    + Samples:
      - Introduced a pipeline modelling tool for cascaded model
        benchmarking: #21477, #21636, #21719. The tool supports a
        declarative YAML-based config to describe pipelines with simulated
        pre-/post-processing. The tool collects and reports latency and
        throughput information for the modelled pipeline.
    + Other changes and fixes:
      - Moved GKernelPackage into cv:: namespace by default, its cv::gapi::
        alias remain for compatibility: #21318;
      - Moved Resize kernel from core to imgproc kernel packages for
        CPU, OpenCL, and Fluid backends: #21157. Also moved tests
        appropriately: #21475;
      - Avoided sporadic test failures in DivC: #21626;
      - Fixed 1D Mat handling in the framework: #21782;
      - Reduced the number of G-API generated accuracy tests: #21909.
- Drop upstream patches:
  * 0001-highgui-Fix-unresolved-OpenGL-functions-for-Qt-backe.patch
  * videoio_initial_FFmpeg_5_0_support.patch
  * videoio_ffmpeg_avoid_memory_leaks.patch

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