proto: upgrade to Quinn 0.9

[djc]

No description provided.

[bluejekyll]

Thanks for getting this upgraded. Looks good.

[codecov]

Codecov Report

Merging #1822 (49d98ef) into main (f7128a1) will decrease coverage by 0.01%.
The diff coverage is 94.73%.

@@            Coverage Diff             @@
##             main    #1822      +/-   ##
==========================================
- Coverage   80.29%   80.28%   -0.02%     
==========================================
  Files         177      177              
  Lines       18424    18429       +5     
==========================================
+ Hits        14793    14795       +2     
- Misses       3631     3634       +3     

Impacted Files	Coverage Δ
crates/proto/src/quic/quic_server.rs	90.69% <90.00%> (-4.31%)	⬇️
crates/proto/src/quic/quic_client_stream.rs	88.75% <100.00%> (+0.14%)	⬆️
crates/proto/src/https/error.rs	0.00% <0.00%> (ø)

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[bluejekyll]

I didn't see that this is ready to go. I'll rebase and merge.