Update sponsor logos

[MattyTheHacker]

just putting here so it's not forgotten about, sponsor logos need updating with the new ones

[ChrisDev18]

I'd be happy to give this a go.
Where can I find the sponsors for this year, and where are the images which need to be updated on the website?

[Thatsmusic99]

Hello!

This year we have the following sponsors:

• The Trade Desk (Gold)
• Bank of America (Silver)
• BNY Mellon (Silver)
• Kainos (Bronze)

I've not worked on this yet since we are working on a separate page for sponsors and sponsorships (see #469), which I want Kainos on rather than on the About page due to their tier (if you do like though, you can put them there). TTD would be good to have as well, but they have very specific terms and conditions about logo usage, so I've been a bit wary of putting their logo anywhere as of yet.

I will go over TTD's contract and confirm what we need to do before having the logo on the website, then you should be free to add these yourself :)