Log Message:
openimageio: updated to 2.5.12.0

OpenImageIO v2.5.12.0

exr: Add IOProxy support for EXR multipart output
pnm: Improvements to pnm plugin: support for uint16 and 32-float, \ 
"pnm:bigendian" and "pnm:pfmflip" controls for output.
ImageBuf: Improve behavior of IB::nsubimages and other related fixes
simd.h: Fix longstanding problem with 16-wide bitcast for 8-wide HW
strutil.h: Add Strutil::eval_as_bool
tests: Add new heif test output
tests: Fix windows quoting for test
build: More warning elimination for clang18
build: Add appropriate compiler defines and flags for SIMD with MSVC
build: Gcc-14 support, testing, CI
docs: Fix stray references to the old repo home