Bump opencv-python from 4.6.0.66 to 4.8.1.78 in /tests/e2e_tests #278

Job	Run time
Smart_CI	20s
Docker	1s
Build	0s
Debian Packages	0s
Samples	0s
Conformance	0s
OpenVINO JS API	0s
C++ unit tests	0s
ONNX Models Tests	0s
ONNX Runtime Integration	0s
CPU functional tests	0s
Python unit tests	0s
NVIDIA plugin	0s
OpenVINO tokenizers extension	0s
GPU ${{ matrix.TEST_TYPE }} Tests	0s
PyTorch Models tests	0s
TensorFlow Layer Tests	0s
TensorFlow Hugging Face Models tests	0s
TensorFlow TF Hub Models tests	0s
TensorFlow Models tests	0s
ci/gha_overall_status	1s
	22s

Provide feedback