tests

Let `last_insert_id` optional and flexible. #4450

Job	Run time
Clippy	1m 14s
Rustfmt	17s
Examples (examples/actix_example)	2m 36s
Init	6s
Examples (examples/axum_example)	2m 28s
Unit Test	3m 14s
Examples (examples/basic)	1m 11s
Examples (examples/graphql_example)	2m 56s
Examples (examples/jsonrpsee_example)	2m 39s
Examples (examples/poem_example)	2m 22s
Examples (examples/proxy_gluesql_example)	1m 27s
Examples (examples/rocket_example)	3m 16s
Examples (examples/rocket_okapi_example)	5m 25s
Examples (examples/salvo_example)	2m 46s
Examples (examples/seaography_example)	2m 35s
Examples (examples/tonic_example)	2m 31s
Compile PostgreSQL (tokio, native-tls)	1m 38s
Compile PostgreSQL (tokio, rustls)	2m 19s
Compile SQLite (async-std, native-tls)	1m 50s
Compile SQLite (async-std, rustls)	1m 18s
Compile MySQL (actix, native-tls)	1m 39s
Compile MySQL (actix, rustls)	1m 10s
CLI	0s
Issues Matrix	0s
Issues	0s
SQLite	0s
MariaDB	0s
MySQL	0s
Postgres	0s
	46m 57s

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