update the invalid packet limit for AES

[marten-seemann]

See quicwg/base-drafts#4175.

[codecov]

Codecov Report

Merging #2825 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2825   +/-   ##
=======================================
  Coverage   85.96%   85.96%           
=======================================
  Files         133      133           
  Lines        8990     8990           
=======================================
  Hits         7728     7728           
  Misses        928      928           
  Partials      334      334           

Impacted Files	Coverage Δ
internal/protocol/protocol.go	100.00% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 51fd3c3...eff36f3. Read the comment docs.