GHSA-ggxf-9f6j-w742: Diesel has possible use after free when deserializing a SQLite database via `SqliteConnection::deserialize_readonly_database`

Diesel allows loading a SQLite database from a byte buffer, represented as &[u8], at runtime via the SqliteConnection::deserialize_readonly_database function. In previous versions of Diesel, this buffer was passed directly to libsqlite3. Since libsqlite3 requires the buffer to remain alive for as long as the database connection is open and Diesel did not ensure this as part of its safe API, callers of SqliteConnection::deserialize_readonly_database could drop the buffer prematurely. This prematurely drop caused libsqlite3 to operate on freed memory.

This vulnerability affects users of SqliteConnection::deserialize_readonly_database who drop the buffer passed to the function before they drop the database connection.