Feat: Allow int type for version in _WP_Dependency chain

[hbhalodia]

Trac ticket: https://core.trac.wordpress.org/ticket/63563

• Updated the function doc, to add support for int type on WP_Dependency, WP_Dependencies classes and wp_enqueue_script, wp_enqueue_style, wp_register_script, wp_register_style function.

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