chore: finish update to go 1.19

[ngraef]

This PR originally contained the full update to go 1.19, but now just adds the pieces missed in #89.

• Update golang to 1.19 in Dockerfile and GitHub workflows
• Update go-runner base image
• Update GitHub Actions versions to prepare for removal of Node 12

Resolves #85

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: ngraef / name: Nick Graef (9609b38, dc70be3)

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[k8s-ci-robot]

Hi @ngraef. Thanks for your PR.

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[ngraef]

Hi @micahhausler 👋 Any thoughts on this? Thanks in advance for your time.

[micahhausler]

/ok-to-test

[micahhausler]

@ngraef Thanks for opening this! Sorry, we had a bit of tidying up to do (like kubernetes/test-infra#28183) to get tests passing.

[micahhausler]

/lgtm
/approve

Thanks so much for doing this!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: micahhausler, ngraef

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