Release 5.4.0

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[Comments]

2025/01/27: Canonical, Free, Premium, v5.4, WPf2b

Add support for Composer. [Canonical only]
Add support for AspirePress Update. [Canonical only]
Add support for GitHub Updater. [Canonical only]
Improve i18n.
Fix harmless warning in Site Health filters check (h/t Rodolphe).
Update Freemius library.