windows1809: Update OpenCV to 4

windows1809/base/Dockerfile

@@ -45,6 +45,6 @@ RUN [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tl
 RUN $vcpkg_dir = 'C:/vcpkg'; \
     git clone https://git.imp.fu-berlin.de/bioroboticslab/robofish/vcpkg.git $vcpkg_dir; \
     cd $vcpkg_dir; \
-    git checkout ed03d814da4c8edf09caba90c15741f13f436f9e; \
+    git checkout 7d322e995f49d3989fa982268c2d4586c4f8d1f1; \
     ./scripts/bootstrap.ps1; \
     [Environment]::SetEnvironmentVariable('VCPKG_DIR', "\"$vcpkg_dir\"", [EnvironmentVariableTarget]::Machine);

windows1809/cuda-devel/Dockerfile

@@ -34,7 +34,7 @@ RUN cd $env:VCPKG_DIR; \
         harfbuzz \
         rpclib \
         eigen3 \
-        "\"opencv3[cuda,ffmpeg,ximea,opengl,contrib,ipp,dnn]\"" \
+        "\"opencv4[cuda,ffmpeg,ximea,opengl,contrib,ipp,dnn]\"" \
         "\"mxnet[cpp,opencv,cuda,cudnn]\""; \
     [Environment]::SetEnvironmentVariable('VCPKG_TRIPLET', "\"$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
     [Environment]::SetEnvironmentVariable('CMAKE_TOOLCHAIN_FILE', "\"/vcpkg/scripts/buildsystems/vcpkg.cmake\"", [EnvironmentVariableTarget]::Machine); \

windows1809/devel/Dockerfile

@@ -23,7 +23,7 @@ RUN cd $env:VCPKG_DIR; \
         harfbuzz \
         rpclib \
         eigen3 \
-        "\"opencv3[ffmpeg,ximea,opengl,contrib,ipp,dnn]\"" \
+        "\"opencv4[ffmpeg,ximea,opengl,contrib,ipp,dnn]\"" \
         "\"mxnet[cpp,opencv]\""; \
     [Environment]::SetEnvironmentVariable('VCPKG_TRIPLET', "\"$vcpkg_triplet\"", [EnvironmentVariableTarget]::Machine); \
     [Environment]::SetEnvironmentVariable('CMAKE_TOOLCHAIN_FILE', "\"/vcpkg/scripts/buildsystems/vcpkg.cmake\"", [EnvironmentVariableTarget]::Machine); \