perf: switch to webp.se for optimized avatar delivery

[wilfriedladenhauf]

this could improve web vitals and save some kb.

**!!! but i must admit i don't know how well https://unavatar.webp.se/ will handle high traffic or if you have a pro plan for unavator.io !!! so this could be a stupid idea... i was just searching for a webp avatar provider **

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https://webp.se/pricing/business/

"If you are adding avatars to a personal project or a medium-sized website, unavatar.webp.se will handle the traffic easily. If you are launching a massive viral application, you should consider using their Consistency Mode or a paid plan to ensure you aren't throttled by the public rate limits."

https://docs.webp.se/public-services/unavatar/

.webp version with:

current jpg avatar image:

[vercel]

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