chore(deps): update dependency opencv-python to v4.8.1.78 (#148)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

setup.cfg

@@ -60,7 +60,7 @@ dev =
     packaging
     numpy
     pympler
-    opencv-python==4.8.0.76
+    opencv-python==4.8.1.78
     pre-commit
     pylint
     coverage