this test is unstable (fails from time to time), let's disable it until fixed

modules/calib3d/test/test_solvepnp_ransac.cpp

@@ -236,7 +236,7 @@ protected:
     }
 };
 
-TEST(Calib3d_SolvePnPRansac, accuracy) { CV_solvePnPRansac_Test test; test.safe_run(); }
+TEST(DISABLED_Calib3d_SolvePnPRansac, accuracy) { CV_solvePnPRansac_Test test; test.safe_run(); }
 TEST(Calib3d_SolvePnP, accuracy) { CV_solvePnP_Test test; test.safe_run(); }