Sporadic CI failure:

[ RUN      ] Test_TFLite.face_landmark/0, where GetParam() = VKCOM/VULKAN
/Users/opencv-cn/GHA-OCV-1/_work/opencv/opencv/opencv/modules/dnn/test/test_common.impl.hpp:84: Failure
Expected: (normL1) <= (l1), actual: 2.13794e-05 vs 2e-05
conv2d_20  |ref| = 164.86170959472656
[  FAILED  ] Test_TFLite.face_landmark/0, where GetParam() = VKCOM/VULKAN (27 ms)

Pull Request Readiness Checklist

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

• I agree to contribute to the project under Apache 2 License.
• To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
• The PR is proposed to the proper branch
• There is a reference to the original bug report and related work
• There is accuracy test, performance test and test data in opencv_extra repository, if applicable
  Patch to opencv_extra has the same branch name.
• The feature is well documented and sample code can be built with the project CMake