Update `Imath` package for OpenEXR 3.4.0 compatibility as described in
the `OpenEXR` install documentation (3.4.0+ should use Imath 3.2).

Fixes: #816

Clang-based Android NDKs bundle unwind support and do not require explicit linking.
Passing malformed flags like `-l-l:libunwind.a` caused build failures with `ld.lld` on NDK r23+.
This change removes those flags from configure options to ensure successful builds.

Update `OpenEXR` with Hunterized `v3.4.0-p0` version:
https://github.com/cpp-pm/openexr/releases/tag/v3.4.0-p0

Dependencies:
- add `Imath` as dependency (unchanged)
- add `libdeflate` as depencency, introduced in `v3.2.0`
- removed `zlib` dependency since `v3.2.0`, replaced by `libdeflate`
- add `OpenJPH` as dependency, since `v3.4.0`

Fixes: #788

On the `master` branch the pipelines fail at the `upload-cache-to-github.py`
script as it is missing the `requests` python module.

Install it before the build to have a working cache upload again.

Fixes: #819

Update to release https://github.com/cpp-pm/libpng/releases/tag/v1.6.36-p4

Integrate cmakeified version: https://github.com/cpp-pm/jpeg/releases/tag/v9f-p1

Fixes: #821

Fixes: #827

use https://github.com/cpp-pm/giflib/releases/tag/v5.2.2-p0 with updated
minimum CMake 3.10 version.

Fixes: #824

Update to release https://github.com/cpp-pm/minizip/releases/tag/v1.0.1-p4

Fixes: cpp-pm/minizip#1

Update to release https://github.com/cpp-pm/zlib/releases/tag/v1.3.1-p0

Fixes: #735

Update OpenCV, OpenCV-Extra and ippicv to `v4.12.0-p0`.
Those packages belong together and should be updated at once.

- OpenCV: update to 4.12.0-p0
- OpenCV-Extra: update to 4.12.0 release
- ippicv: update to 20250130 for OpenCV 4.12.0
  - keep APPLE version to ippicv 20240201 from OpenCV 4.10.0
- add `WITH_VTK=OFF`
- Unpin OpenCV for all as Linux build is now fixed with fixed
  TIFF/OpenEXR

Fixes: #801