Bump go to 1.21 and pipeline to v0.59.0 LTS

[khrm]

Changes

Submitter Checklist

As the author of this PR, please check off the items in this checklist:

• [ ] Has Docs if any changes are user facing, including updates to minimum requirements e.g. Kubernetes version bumps
• [x] Has Tests included if any functionality added or changed
• [x] Follows the commit message standard
• [x] Meets the Tekton contributor standards (including functionality, content, code)
• [x] Has a kind label. You can add one by adding a comment on this PR that contains /kind <type>. Valid types are bug, cleanup, design, documentation, feature, flake, misc, question, tep
• [x] Release notes block below has been updated with any user facing changes (API changes, bug fixes, changes requiring upgrade notices or deprecation warnings). See some examples of good release notes.
• [ ] Release notes contains the string "action required" if the change requires additional action from users switching to the new release

Release Notes

Update Go version to 1.21 and Pipelines to v0.59.0. Minimum Kubernetes version is 1.27.

[khrm]

/assign @savitaashture

[khrm]

/test tekton-triggers-unit-tests

[khrm]

It seems I need to update test go version.

[khrm]

Should be fixed by https://github.com/tektoncd/plumbing/pull/1938

[khrm]

/retest

[khrm]

We also need to change replace in go.mod file.

[dibyom]

/test pull-tekton-triggers-build-tests

[khrm]

/test pull-tekton-triggers-build-tests

[khrm]

/test tekton-triggers-unit-tests

[khrm]

/test pull-tekton-triggers-build-tests

[tekton-robot]

The following is the coverage report on the affected files. Say /test pull-tekton-triggers-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/adapter/adapter.go	23.2%	24.1%	0.9

[tekton-robot]

The following is the coverage report on the affected files. Say /test pull-tekton-triggers-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/adapter/adapter.go	23.2%	24.1%	0.9

[khrm]

/test pull-tekton-triggers-integration-tests

[khrm]

/test pull-tekton-triggers-build-tests

[khrm]

"error: RPC failed; curl 92 HTTP/2 stream 5 was not closed cleanly: CANCEL (err 8) " Not sure why we are getting this.

[khrm]

/retest-required

[tekton-robot]

The following is the coverage report on the affected files. Say /test pull-tekton-triggers-go-coverage to re-run this coverage report

File	Old Coverage	New Coverage	Delta
pkg/adapter/adapter.go	23.2%	24.1%	0.9

[khrm]

@savitaashture Can you review this?

[tekton-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: savitaashture

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