[DNM] Revert "Unpin libreswan version"

[pperiyasamy]

This reverts commit 9bb575a.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-bot]

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/lifecycle stale

[openshift-merge-robot]

PR needs rebase.

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[jbtrystram]

Closing as #1849 went in

[jbtrystram]

/close

[openshift-ci]

@jbtrystram: Closed this PR.

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/close

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