[opencv4] Build error on arm64-windows

[ztt19851213]

Failed to download cbfcd60361a73beb8c583eea7e8e6664-sr.caffemodel.
If you are using a proxy, please ensure your proxy settings are correct.
Possible causes are:

1. You are actually using an HTTP proxy, but setting HTTPS_PROXY variable to https//address:port.
   This is not correct, because https:// prefix claims the proxy is an HTTPS proxy, while your proxy (v2ray, shadowsocksr, etc...) is an HTTP proxy.
   Try setting http://address:port to both HTTP_PROXY and HTTPS_PROXY instead.
2. If you are using Windows, vcpkg will automatically use your Windows IE Proxy Settings set by your proxy software. See, If HTTP(S)_PROXY already exist in environment variable, do not use IE Proxy (#49) vcpkg-tool#77
   The value set by your proxy might be wrong, or have same https:// prefix issue.
3. Your proxy's remote server is our of service.
   If you've tried directly download the link, and believe this is not a temporay download server failure, please submit an issue at https://github.com/Microsoft/vcpkg/issues
   to report this upstream download server failure.
   error: https://raw.githubusercontent.com/WeChatCV/opencv_3rdparty/a8b69ccc738421293254aec5ddb38bd523503252/sr.caffemodel: WinHttpSendRequest failed with exit code 12002
   error: https://raw.githubusercontent.com/WeChatCV/opencv_3rdparty/a8b69ccc738421293254aec5ddb38bd523503252/sr.caffemodel: WinHttpSendRequest failed with exit code 12002
   error: https://raw.githubusercontent.com/WeChatCV/opencv_3rdparty/a8b69ccc738421293254aec5ddb38bd523503252/sr.caffemodel: WinHttpSendRequest failed with exit code 12002
   error: https://raw.githubusercontent.com/WeChatCV/opencv_3rdparty/a8b69ccc738421293254aec5ddb38bd523503252/sr.caffemodel: WinHttpReceiveResponse failed with exit code 12002
   CMake Error at scripts/cmake/vcpkg_download_distfile.cmake:231 (message):
   Download failed, halting portfile.
   Call Stack (most recent call first):
   ports/opencv4/portfile.cmake:197 (vcpkg_download_distfile)
   scripts/ports.cmake:196 (include)
   error: building opencv4:arm64-windows failed with: BUILD_FAILED
   See https://learn.microsoft.com/vcpkg/troubleshoot/build-failures?WT.mc_id=vcpkg_inproduct_cli for more information.
   Elapsed time to handle opencv4:arm64-windows: 7.4 min
   Please ensure you're using the latest port files with git pull and vcpkg update.
   Then check for known issues at:
   https://github.com/microsoft/vcpkg/issues?q=is%3Aissue+is%3Aopen+in%3Atitle+opencv4
   You can submit a new issue at:
   https://github.com/microsoft/vcpkg/issues/new?title=[opencv4]+Build+error+on+arm64-windows&body=Copy+issue+body+from+D%3A%2Fsoft%2Fvcpkg%2Finstalled%2Fvcpkg%2Fissue_body.md

[github-actions]

Please see #30604 for how to properly report a build failure.