v6.0.0-beta.17

What's Changed

• Update node-addon-api to v6 by @DonJayamanne in #563
• ci: build on Ubuntu 20.04 to support older GlibCXX by @aminya in #571

New Contributors

• @DonJayamanne made their first contribution in #563

Full Changelog: v6.0.0-beta.16...v6.0.0-beta.17