Fixes cache issue for OpenCV Linux

Model API uses the cmake files for opencv.
This was not being cached though, meaning that when the cache was used
then the runner would fail

Author: RHeckerIntel

.github/workflows/build-linux-bindings.yml

@@ -66,6 +66,7 @@ jobs:
         with:
           path: |
             /usr/local/include/opencv4
+            /usr/local/lib/cmake/opencv4
             /usr/local/lib/libopencv_*
           key: ${{ runner.os }}-opencv-${{ hashFiles('openvino_bindings/scripts/setup_opencv.sh') }}