Update opencv requirement from 0.93.1 to 0.94.2

[dependabot[bot]]

Updates the requirements on opencv to permit the latest version.

Changelog

Sourced from opencv's changelog.

• 0.94.2

  • Fix building on Windows using vcpkg without OpenCL support (fixes twistedfall/opencv-rust#532).

• 0.94.1

  • Add workaround for building on Windows with clang-19 and clang-runtime feature enabled (fixes twistedfall/opencv-rust#628).

• 0.94.0

  • Add support for the upcoming OpenCV 5.0.0 (based on the current alpha) and completely drop support for OpenCV 3.2.
  • Bump the minimum Rust version to 1.77.0.
  • Drop deprecated type aliases like VectorOf....
  • Add support for f16 half precision floating point numbers via the f16 crate feature.
  • Multiple internal improvements that led to some minor function name changes.
  • Add missing CV_depthC(chan) functions (e.g. CV_8UC) to construct OpenCV types with more than 4 channels.

• 0.93.7

  • Fix building on windows with the latest vcpkg git version (fixes twistedfall/opencv-rust#640 and twistedfall/opencv-rust#641).

• 0.93.6

  • Adjust the CI, examples and docs to OpenCV 4.11.0.
  • Add the signal module support.

• 0.93.5

  • Fix the jobserver minimum version (fixes twistedfall/opencv-rust#639)

• 0.93.4

  • Various documentation, callback handling and other internal improvements.

• 0.93.3

  • Fix issue with using Option<Ptr>, now behaves as expected and doesn't segfault.
  • Introduce Mat::get_data_dump() to get the dump of the Mat data, it's also included in the Debug output.
  • Improve formatting of the generated bindings.

• 0.93.2

  • Fix binding generation using clang-19.

• 0.93.1

  • Fix 0.93.0 regression: twistedfall/opencv-rust#620.
  • Allow combining several versions of the crate as dependencies, fixes twistedfall/opencv-rust#597.

• 0.93.0

  • Improve automatic slice detection, e.g. CommandParser::new() now calculates argc automatically.
  • find_circles_grid now can take None the blob_detector argument.
  • Rework the handling of static library linkage.
  • Allow passing custom clang args via OPENCV_CLANG_ARGS environment variable.

• 0.92.3

  • Add an irreversible conversion from BoxedRefMut to BoxedMut.
  • Fix handling of arrays of strings, fixes CommandLineParser (kudos to niemeyer).

... (truncated)

Commits

• 97dcbd0 chore: Release
• 17c873d chore: Release
• aeec0e9 Update docs & changelog
• d4c3879 Include additional core headers conditionally
• 60b1abc Cleanup
• db6fc08 Bump & optimize CI
• a29d222 chore: Release
• 4cdf43c chore: Release
• d765618 Update changelog
• 501fb53 Add workaround for clang-19 + clang-runtime on Windows
• Additional commits viewable in compare view

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