Pin OpenCV dependency C++ standard

Author: chammoru

build/Build-OpenCvDependency.ps1

@@ -144,6 +144,8 @@ if (-not (Test-Path $configureStamp)) {
         "-DOpenCV_ARCH=$platformName",
         "-DOpenCV_RUNTIME=vc16",
         "-DCMAKE_INSTALL_PREFIX=$installRootPath",
+        "-DCMAKE_CXX_STANDARD:STRING=14",
+        "-DCMAKE_CXX_STANDARD_REQUIRED:BOOL=ON",
         "-DBUILD_DOCS:BOOL=OFF",
         "-DWITH_CUDA:BOOL=OFF",
         "-DBUILD_EXAMPLES:BOOL=OFF",