Revert "Disable nightly testing during Jan 2024 Release"

[Haroon-Khel]

Reverts #892

[github-actions]

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[github-actions]

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[Haroon-Khel]

/merge

[github-actions]

Approval to merge during the lockdown cycle

Please can two Adoptium PMC members comment /approve?

[smlambert]

/approve

[sxa]

/approve

Thank you @smlambert and @sxa for your approvals, this pull request is now approved to merge during release.