Merge pull request #28744 from asmorkalov:as/kleidicv_26.03

KleidiCV update to verison 26.03 #28744

KleidiCV release: https://gitlab.arm.com/kleidi/kleidicv/-/releases/26.03

Tuned DNN test threshold as resize linear produces slightly different result with the new KleidiCV version.

### Pull Request Readiness Checklist

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

- [x] I agree to contribute to the project under Apache 2 License.
- [x] 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

modules/dnn/misc/python/test/test_dnn.py

@@ -231,7 +231,7 @@ class dnn_test(NewOpenCVTests):
         iouDiff = 0.05
         confThreshold = 0.0001
         nmsThreshold = 0
-        scoreDiff = 1e-3
+        scoreDiff = 1.1e-3
 
         classIds, confidences, boxes = model.detect(frame, confThreshold, nmsThreshold)