📖 Set 1.4 EOL date and update coredns version table

[kranurag7]

After 1.6.0 release, this is an extension to some of the task done via this PR #9119

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #

[k8s-ci-robot]

Hi @kranurag7. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[furkatgofurov7]

/ok-to-test
/area documentation

[furkatgofurov7]

/retitle 📖 Set 1.4 EOL date and update coredns version table

[furkatgofurov7]

cc @sbueringer

Q: do we need to cherry-pick?

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 2739851a9340712cdcb9ca44f1e1f6c009030e8e

[furkatgofurov7]

/lgtm

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 96bfeb8dec732625dfa36f4cd12d243bc894cbb6

[furkatgofurov7]

cc @sbueringer for approval, thx!

[sbueringer]

We should cherry-pick into release-1.6

/cherry-pick release-1.6

/approve

[k8s-infra-cherrypick-robot]

@sbueringer: once the present PR merges, I will cherry-pick it on top of release-1.6 in a new PR and assign it to you.

In response to this:

We should cherry-pick into release-1.6

/cherry-pick release-1.6

/approve

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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[k8s-infra-cherrypick-robot]

@sbueringer: new pull request created: #9824

In response to this:

We should cherry-pick into release-1.6

/cherry-pick release-1.6

/approve

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