[PR #7647/1303350e backport][3.8] Upgrade to llhttp 9.1.3

[patchback]

This is a backport of PR #7647 as merged into master (1303350).

None

[codecov]

Codecov Report

Merging #7648 (f8a7cc3) into 3.8 (b30c0cd) will decrease coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              3.8    #7648      +/-   ##
==========================================
- Coverage   97.36%   97.36%   -0.01%     
==========================================
  Files         107      107              
  Lines       31049    31049              
  Branches     3940     3940              
==========================================
- Hits        30232    30230       -2     
- Misses        610      611       +1     
- Partials      207      208       +1     

Flag	Coverage Δ
CI-GHA	97.23% <ø> (-0.01%)	⬇️
OS-Linux	96.88% <ø> (+<0.01%)	⬆️
OS-Windows	95.21% <ø> (-0.01%)	⬇️
OS-macOS	96.62% <ø> (+<0.01%)	⬆️
Py-3.10.11	94.82% <ø> (ø)
Py-3.10.13	96.48% <ø> (+<0.01%)	⬆️
Py-3.11.0	96.16% <ø> (ø)
Py-3.6.15	96.35% <ø> (-0.01%)	⬇️
Py-3.6.8	94.73% <ø> (-0.01%)	⬇️
Py-3.7.17	96.51% <ø> (ø)
Py-3.7.9	94.86% <ø> (ø)
Py-3.8.10	94.79% <ø> (ø)
Py-3.8.18	96.42% <ø> (ø)
Py-3.9.13	94.79% <ø> (ø)
Py-3.9.18	96.45% <ø> (+<0.01%)	⬆️
Py-pypy7.3.11	93.88% <ø> (+<0.01%)	⬆️
VM-macos-latest	96.62% <ø> (+<0.01%)	⬆️
VM-ubuntu-20.04	96.82% <ø> (ø)
VM-ubuntu-latest	96.38% <ø> (+<0.01%)	⬆️
VM-windows-latest	95.21% <ø> (-0.01%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
aiohttp/http_parser.py	97.51% <ø> (ø)
tests/test_http_parser.py	98.58% <ø> (ø)

... and 1 file with indirect coverage changes

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