Add solana pay helio logo

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Why are you adding this icons?

This adds the icon for the new Solana Pay off-site payment app https://apps.shopify.com/solana-pay-helio

(The old solanapay logo is unchanged as that is for a previous version and completely different app).

Help us identify yourself

• [x] 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.
• [ ] I'm an individual and I've read all the brand icon’s guidelines.

Link to the brand guidelines: https://www.hel.io/media-kit

Checklist to add new icons

• [x] All icons have a corresponding entry in db/payment_icons.yml
• [x] I have followed the icon guidelines detailed in the CONTRIBUTING.md file
• [x] I have optimized the icon with SVGO
• [x] I am confident that all icons are clear and easy to read/understand
• [x] I have provided a link to the brand icon’s brand guidelines whenever possible.
• [x] I have attached a screenshot comparison with the example icon provided in guidelines
• [x] I recognize that if my icon is not approved by the Shopify Partners team it may not receive review nor merger.

Attach a screenshot of the icon along side the example Visa icon

If the icons are intended for use by Shopify, please provide the following info:

Who are you working with at Shopify? (avoid adding personal details, provide github handle(preferred) or first name and last name): Sunjay Chopra

What's the expected date of this change to deploy on Shopify? < 7 Days