GHSA-66fw-43h8-f8p3 XMP Toolkit's `XmpFile::close` can trigger undefined behavior

• crates.io xmp_toolkit: < 1.9.0 → fixed in 1.9.0

Affected versions of the crate failed to catch C++ exceptions raised within the `XmpFile::close` function. If such an exception occurred, it would trigger undefined behavior, typically a process abort. This is best demonstrated in issue #230, where a race condition causes the `close` call to fail due to file I/O errors. This was fixed in PR #232 (released as crate version 1.9.0), which now safely handles the exception. For backward compatibility, the existing API ignores the error. A new API `XmpFile::try_close` was added to allow callers to receive and process the error result. Users of all prior versions of `xmp_toolkit` are encouraged to update to version 1.9.0 to avoid undefined behavior.