usql v0.19.21

What's Changed

• feat: Bring back Impala support by @murfffi in #518

Full Changelog: v0.19.20...v0.19.21

VirusTotal analysis:

• usql_static-0.19.21-linux-amd64-0a28f833
• usql_static-0.19.21-linux-arm64-5a0573d8
• usql-0.19.21-darwin-amd64-dc5bb34a
• usql-0.19.21-darwin-arm64-61dd8055
• usql-0.19.21-darwin-universal-fcbacbba
• usql-0.19.21-linux-amd64-a8d3937c
• usql-0.19.21-linux-arm-c552fd74
• usql-0.19.21-linux-arm64-c469114f