Release 3.0.9.0 (Aug 1, 2025) -- compared to 3.0.8.1

• maketx: Add flags to increase feature parity with txmake #4841 (by Scott Milner)
• perf: Speed up maketx --envlatl when multithreaded by over 10x. #4825
• perf: Speed up OpenEXR non-core header read time #4832
• oiiotool: Allow thread control for --parallel-frames #4818
• ImageInput: Incorrect IOProxy logic related to valid_file #4839
• python: Got strides wrong passing 2D numpy pixel array #4843
• ffmpeg: Replace deprecated and soon removed avcodec_close with avcodec_free_context #4837 (by Vlad Erium)
• build/python: For python stub generation, lock pybind11 to pre-3.0 #4831
• build: Fix typo related to finding ccache #4833
• build: PNG auto-build improvements #4835
• build: Propagate CMAKE_MSVC_RUNTIME_LIBRARY #4842
• build: Update jpeg2000input.cpp to include cstdarg #4836 (by Peter Kovář)
• ci: Bump 'latest releases' tests to use pybind11 3.0.0 #4828
• (docs): Correct docs and type of "resident_memory_used_MB" attribute #4824
• (admin): Update SECURITY to reflect that 2.5 only gets critical fixes now #4829