Log Message:
blosc2: updated to 2.10.3

Changes from 2.10.2 to 2.10.3

* Globally registered new codec `openhtj2k`. This will be loaded dynamically.
* Added a `BLOSC_INFO` macro for details on compression params.
* Added `get_blocksize.c` example on automatic blocksizes.
* Warning fixes.
* Fixes for mingw.