Register, not enqueue

Not all pages might need jQuery, so it’s best to just deregister the old version and register the new version (and not enqueue).

Anything which declares jQuery as a dependency will automatically enqueue jQuery.

This way on pages where scripts don’t need jQuery won’t load it.

An example is a plugin script which does something on comments. The home page doesn’t have a comment box and won’t need it.

But by enqueuing, you are forcing it where it’s not needed.