Increase the damage of pulse bomb

[Devil-26652]

@TomPowers

Tracer

Pulse Bomb

• Max damage decreased from 400 to 300

Developers Comment: Pulse Bomb was too good at killing tanks, who can be easy to stick due to their size. This damage reduction makes it less powerful as a tank-destroyer, while keeping it lethal against most other heroes.

The nerfed her bomb because Tracer is not a tank buster. That is not her role.

I doubt the developers will buff it.