Resolve libsqlite3-sys vulnerability once SQLx 0.7 fixes Executor trait impl for &mut Transaction

[johnbcodes]

SQLx version 0.7 updates the rusqlite dependency which resolves a vulnerability with high severtity. However, the current alpha releases of SQLx disables implementation of the Executor trait for &mut Transaction. This disables executing inserts and updates for certain transactions like this one in the sqlite-es dependency.