chore(ci): drop Node v16 from test matrix, add Node v20

[bjoerge]

Description

Node 16 goes out of maintenance LTS today, so let's drop it form our test matrix. Also, probably a good idea to add v20 now.

What to review

• Tests are passing

Notes for release

• Drop Node 16.x from CI test matrix

[vercel]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
performance-studio	✅ Ready (Inspect)	Visit Preview		Sep 12, 2023 8:40am
test-studio	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 12, 2023 8:40am

1 Ignored Deployment

Name	Status	Preview	Comments	Updated (UTC)
studio-workshop	⬜️ Ignored (Inspect)	Visit Preview		Sep 12, 2023 8:40am

[github-actions]

Component Testing Report Updated Sep 12, 2023 8:43 AM (UTC)

File	Status	Duration	Passed	Skipped	Failed
formBuilder/ArrayInput.spec.tsx	✅ Passed (Inspect)	11s	3	0	0
formBuilder/inputs/PortableText/Annotations.spec.tsx	✅ Passed (Inspect)	10s	3	0	0
formBuilder/inputs/PortableText/Decorators.spec.tsx	✅ Passed (Inspect)	11s	6	0	0
formBuilder/inputs/PortableText/Input.spec.tsx	✅ Passed (Inspect)	15s	9	0	0
formBuilder/inputs/PortableText/ObjectBlock.spec.tsx	✅ Passed (Inspect)	50s	18	0	0
formBuilder/inputs/PortableText/Styles.spec.tsx	✅ Passed (Inspect)	11s	6	0	0
formBuilder/inputs/PortableText/Toolbar.spec.tsx	✅ Passed (Inspect)	7s	3	0	0

[github-actions]

No changes to documentation

[binoy14]

Noice!