SQLx

feat: implement `Encode`, `Decode`, `Type` for `Arc<str>` and `Arc<[u8]>` #4560

Job	Run time
Unit Tests	1m 21s
Format	12s
Check (async-std, native-tls)	1m 25s
Check build using minimal versions	1m 24s
Check (async-std, rustls)	1m 22s
Check (async-std, none)	1m 16s
Check (tokio, native-tls)	1m 19s
Check (tokio, rustls)	1m 19s
Check (tokio, none)	1m 14s
Postgres	0s
MariaDB	0s
SQLite	0s
MySQL	0s
	10m 52s

Provide feedback