Bump go version to 1.19

[avinal]

Changes

• go1.18 support has already ended on 1 Feb 2023
• We are using functions in our tests that are not available in 1.18
• Fixes #443

/kind bug

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Release Notes

Minimum go version requirement updated to go1.19

[tekton-robot]

Hi @avinal. Thanks for your PR.

I'm waiting for a tektoncd member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[avinal]

Should I update other dependencies as well?

[alan-ghelardi]

/approve

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: alan-ghelardi

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[enarha]

/ok-to-test

[adambkaplan]

Have you run go mod tidy and go mod vendor? I am somewhat surprised that changing the go.mod compatibility hasn't introduced any changes to go.mod and go.sum.

[adambkaplan]

(also interesting that we aren't checking that go.mod and go.sum are up to date/accurate).

[avinal]

Yes, I ran both the commands. I can bump the dependencies manually, though. If we want that.

[enarha]

/lgtm