Scrapper: Power, energy and comboPower should be numbers

[metalvegetarianoprogresivo]

When updating the database for the cards, energy, power and comboPower are added as a string instead of being a number. This is a blocker for future updates where we can search by a laxer search for numbers (i.e. search all cards that have 3 or less energy).

Acceptance criteria:

• energy should be a number on the json.
• power should be a number on the json.
• comboPower should be a number on the json.