Add Python Software Foundation as a Silver Sponsor

[kjaymiller]

On https://blackpythondevs.com/leadership-summit-2024/ - we need to add the PSF as a silver sponsor with their logo on the page

[Ngazetungue]

Can you assign this to me

[Ngazetungue]

PSF logo added. Added the same time as defna logo. The commit message mistakenly is the same.

[kjaymiller]

That's okay. Did you submit a PR for it? I'm not seeing it?

[Ngazetungue]

That's okay. Did you submit a PR for it? I'm not seeing it?

find it here: #434

[TimOsahenru]

I'm assuming this issue has been resolved, can we close it please. Thanks