deprecate go 1.21

[vineeth-bandi]

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[vineeth-bandi]

/approve

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[srbgupta86]

/lgtm

[eks-distro-bot]

@vineeth-bandi: Updated the job-config configmap in namespace default at cluster default using the following files:

• key eks-distro-base-presubmits-golang-1-21-al-2.yaml using file ``
• key eks-distro-base-presubmits-golang-1-21-al-2023.yaml using file ``
• key golang-1-21-PROD-images-postsubmits.yaml using file ``
• key golang-1-21-presubmits.yaml using file ``

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