chore(deps): update dependency strukturag/libheif to v1.19.2

[renovate]

This PR contains the following updates:

Package	Update	Change
strukturag/libheif	patch	1.19.1 -> 1.19.2

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Release Notes

strukturag/libheif (strukturag/libheif)

v1.19.2: - maintenance

Compare Source

• fix DLL symbol export for non MSVC-compilers on Windows
• fix running the unit tests from the build directory when building with plugins
• switch to catch2 testing framework. We can now check for prerequisites at runtime and skip tests accordingly

If you're not affected by any of the above, you don't need to upgrade.

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