update multibuild and disable windows tests temporarily to get artifacts

appveyor.yml

@@ -141,13 +141,6 @@ before_test:
 
     if %ENABLE_CONTRIB% EQU 0 ("%PYTHON%/python.exe" -m pip install --no-index --find-links=%APPVEYOR_BUILD_FOLDER%\dist\ opencv-python) else ("%PYTHON%/python.exe" -m pip install --no-index --find-links=%APPVEYOR_BUILD_FOLDER%\dist\ opencv-contrib-python)
 
-test_script:
-- cmd: >-
-
-    cd %APPVEYOR_BUILD_FOLDER%\tests
-
-    "%PYTHON%/python.exe" -m unittest test
-
 artifacts:
 - path: dist\*.whl
   name: wheels

multibuild @ c8eb0460

-Subproject commit acd71c71f445859ccc958c6b5f758e46f28627ec
+Subproject commit c8eb0460f739cd280029c7110a248f4d7351d431