Icons update

[dani-ooo]

Why are you adding this icons?

I'm updating these icons because some of the previous ones are quite distorted and/or don't use the current official colors from the brands.

Help us identify yourself

• [ ] I'm working/collaborating with the brand directly and they have provided the icons.
• [ ] I'm associated with the brand and I've read all the brand icon’s guidelines.
• [x] I'm an individual and I've read all the brand icon’s guidelines.

Link to the brand guidelines:

• https://www.mastercard.com/brandcenter/en/download-artwork
• https://www.merchantsignage.visa.com/brand_guidelines
• https://www.americanexpress.com/en-gb/business/merchant/supplies/details/?pid=WEBLOGO1
• https://newsroom.paypal-corp.com/media-resources
• https://venmo.com/about/brand/