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In Star Wars, there's some shots where Jedi deflect lasers with their lightsabers. I know there's a law that says you can't go faster then the speed of light and lasers are light, so what is the smallest change in physics to make it so that you can deflect the lasers? This is challenging because some lasers go slow (blasters) and others go fast (Life destroying moon that was badly named, even star energy sucking base was bigger). Also, the graphics seem good, meaning the light from the people was functioning like real-life light.

EDIT:

@Renan's answer makes sense to me, but if the bolts are plasma, then how do the lightsabers deflect the bolts? Also, all energy dissipates over distances. But there are some long range shots but the explosions seem to be the same. How does this work?

Allow me to challenge the premises:

1. The shots that the Jedi deflect are not lasers. From the Wookiepedia::

A blaster, also called a gun, was any type of ranged weapon that fired bolts of intense plasma energy, often mistaken as lasers.

2. The force is a great source of ***-pulls. Since the Jedi are able to see the future, if the plot requires, a Jedi might just position their light sword with a priori knowledge of where the laser will be fired.

Now let's assume that there is no challenge to the frame, and let's take your question to heart.

(...) what is the smallest change in physics to make it so that you can deflect the lasers?

Take a page from Terry Pratchett's Discworld. In The LastContinent, we find this gem:

Light travels slowly on the Disc and is slightly heavy, with a tendency to pile up against high mountain ranges. Research wizards have speculated that there is another, much speedier type of light which allows the slower light to be seen, but since this moves too fast to see they have been unable to find a use for it.

So there are two types of light. Jedi could then see the incoming laser through usage of the faster light, and thus move in time to score a home run with their laser bats.

This doesn't require any changes in physics. You simply deflect the lasers by predicting where they will hit and interposing the lightsaber or other light deflecting tool in the path of travel. You don't need to move faster than the light. You just move faster than the people wielding the laser weapons, blocking where they aim rather than waiting until they fire.

This may or may not have been the solution in Star Wars. The SFF.SE site would be a better place to ask about that. Or why lightsabers deflect light. Lightsabers are a technology so advanced as to be indistinguishable from magic. So if you want more details related to that, you should specify more about how your magical technology works. Then we could try to explain why it worked that way. Or frame challenge that it wouldn't.