Release version `0.47.0`

[alamb]

Follow on to #1214

Filing a ticket here to track the work of a release (mostly so others can follow along)

Target Release Date: Approximately 2024-06-03

Release instructions: https://github.com/sqlparser-rs/sqlparser-rs/blob/main/docs/releasing.md

Steps:

• Make a PR to update CHANGELOG.md: Add CHANGELOG for 0.47.0 #1295
• run cargo release
• verify the new release is on crates.io: https://crates.io/crates/sqlparser/0.47.0
• Make ticket for next release: Release sqlparser-rs version 0.48.0 #1296

[alamb]

I plan to release this today

[alamb]

The release is now on crates.io: https://crates.io/crates/sqlparser/0.47.0