dnsdist: Update Quiche to 0.29.3

[rgacogne]

Short description

Checklist

I have:

• read the CONTRIBUTING.md document
• read and accepted the Developer Certificate of Origin document, including the AI Policy, and added a "Signed-off-by" to my commits
• compiled this code
• tested this code
• included documentation (including possible behaviour changes)
• documented the code
• added or modified regression test(s)
• added or modified unit test(s)

[coveralls]

Coverage Report for CI Build 32740703047

Coverage decreased (-0.02%) to 71.215%

Details

• Coverage decreased (-0.02%) from the base build.
• Patch coverage: No coverable lines changed in this PR.
• 3702 coverage regressions across 89 files.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

3702 previously-covered lines in 89 files lost coverage.

Top 10 Files by Coverage Loss	Lines Losing Coverage	Coverage
pdns/recursordist/syncres.cc	440	76.44%
pdns/recursordist/rec-lua-conf.cc	352	19.84%
pdns/recursordist/rec-rust-lib/cxxsupport.cc	343	58.03%
pdns/recursordist/rpzloader.cc	291	43.45%
pdns/webserver.cc	211	54.69%
pdns/recursordist/rec-main.hh	149	8.85%
pdns/ixfr.cc	118	40.06%
pdns/recursordist/recpacketcache.cc	96	55.59%
pdns/recursordist/rec-zonetocache.cc	85	56.93%
pdns/recursordist/rec-protozero.hh	83	17.8%

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Coverage Stats

Relevant Lines:	173300
Covered Lines:	135320
Line Coverage:	78.08%
Relevant Branches:	82894
Covered Branches:	47129
Branch Coverage:	56.85%
Branches in Coverage %:	Yes
Coverage Strength:	6515469.25 hits per line

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💛 - Coveralls