update go to 1.20

[jazanne]

• update to go 1.20
• update golangci linter and fix and/or disable some new checks

[shortcut-integration[bot]]

This pull request has been linked to Shortcut Story #211611: update code refs to go 1.20.

[jazanne]

Does the funlen stuff need to be part of this?

no i'll disable funlen and move those commits elsewhere