This update for matio fixes the following issues:

Update to version 1.5.23:

  * Fixed testsuite regression from version 1.5.22.

Changes from version 1.5.22:

* Added support for reading large MAT file.
* Updated cmake-conan to version 0.17.0.
* Fixed CMake build with Conan (MATIO_USE_CONAN:BOOL=ON).
* Fixed data type when reading 16-bit character data from HDF5
  MAT file.
* Fixed heap-based buffer overflows when reading (crafted) MAT
  file (CVE-2020-36428, CVE-2021-36977).
* Confirmed compatibility with HDF5 v1.13.0 and v1.13.1.
* Several other fixes, for example for memory leaks.