Bump opencv from 0.88.8 to 0.89.0 in /backend

[dependabot]

Bumps opencv from 0.88.8 to 0.89.0.

Changelog

Sourced from opencv's changelog.

• 0.89.0

  • All functions accepting classes now take impl ClassTrait instead of Class directly. This allows passing other objects that implement the same trait. This change should be backwards compatible.
  • Some functions, notably Mat::roi(), now return a BoxedRef<Mat> wrapper instead of seemingly independent Mat. This fixes old soundness hole because the returned Mat was actually a view into the source Mat and you could easily end up with 2 mutable references to the same memory. An additional *_mut() is generated for each of such function to return a mutable BoxedRefMut<Mat>. To get 2 mutable references to the same Mat for the non-intersecting regions use the new Mat::roi_2_mut() function.
  • Slice detection improved, slice arguments in more functions are now generated automatically.
  • Some slices in function arguments are now references to arrays of particular size. To migrate call .try_into() to convert the slice to the array.
  • The error message for the unspecified error (should never actually be visible) is changed to "Unspecified error, neither from OpenCV nor from std".
  • Function signature changes:
    • A group of functions for Mat, UMat, GpuMat and GpuMatND have been given proper names (rowscols, roi, ranges, col_bounds). Consequently, e.g. roi function can now be called on the Mat instance (mat.roi()) instead of requiring a fully qualified call (Mat::roi(&mat)).
    • MatConstIterator::pos_to() is now unsafe and takes a pointer instead of a reference.

• 0.88.9

  • Fix building on macOS with vcpkg (fixes twistedfall/opencv-rust#549).

Commits

• 985af46 chore: Release
• 162db06 Update changelog & regenerate docs
• a801650 Accept impl traits instead of specific types in function signatures, implemen...
• 906fa61 Make pos_to take a pointer
• 320f0ee Cleanup
• 510c5fb Add manual array size to some methods
• c8253d6 Improve slice detection
• 3530206 Handle std::exception separately, change the unspecified code from -9999 to -2
• 3b923a7 Handle double pointer in CUDA_RawVideoSourceTrait::get_next_packet differently
• 0b636de chore: Release
• Additional commits viewable in compare view

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[dependabot]

Superseded by #427.