chore(deps): bump zstd-safe from 7.2.4 to 8.0.0

[dependabot]

Bumps zstd-safe from 7.2.4 to 8.0.0.

Release notes

Sourced from zstd-safe's releases.

zstd-safe v8.0.0

Breaking

• CCtx::ref_cdict() and DCtx::ref_ddict() now borrow the dictionary for as long as the context. zstd stores the dictionary in the context by pointer and dereferences it on every later operation, so safe code could previously drop the dictionary and cause a use-after-free.
• AdvancedSeekable no longer implements DerefMut (gyscos/zstd-rs#366). Handing out a &mut Seekable let safe code mem::swap() the context out and leave the swapped-out one holding a pointer to a reader this type frees on drop. decompress() and decompress_frame() are available directly on AdvancedSeekable instead, and Deref still covers the read-only queries.

Fixed

• A context is no longer reused after an error left it in a state zstd considers undefined (gyscos/zstd-rs#315). zstd documents calling the streaming functions again on such a context as undefined behaviour; they now return the original error until something resets the context.
• Cursor positions are no longer truncated when converted to usize, which on a 32-bit target could turn an out-of-range position into a small in-range one and read or write the wrong part of the buffer.
• Seekable::init_advanced() no longer leaks the boxed reader when initialization fails.

Other

• New cmake and vendored features, forwarded to zstd-sys.
• ResetDirective derives Copy, Clone, Debug, PartialEq and Eq, like the crate's other parameter enums.
• The Send and Sync impls carry safety comments explaining why they hold.

Commits

• 648acb4 Avoid let...else in the seekable callbacks
• e1152c1 Bump versions for the next release
• 7caed6e Derive the usual traits on ResetDirective
• bf7b1f7 Refuse to reuse a context an error may have left undefined
• 1565618 Check the target, not the host, for MSVC
• 8315a62 Return Ok(0) from Read::read for an empty buffer
• a7cfa93 Keep the std gate on the Cursor WriteBuf impl
• 9bf1692 Say why the Send and Sync impls hold
• 681bcc3 Don't truncate Cursor positions on 32-bit targets
• d5a1fdd Don't hand out a &mut Seekable from AdvancedSeekable
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