chore: bump quinn-proto to 0.11.8 for cargo audit pass

[dqhl76]

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Summary

cargo audit block CI, try solve it

==> build-tool using image runner/build-tool:dev-nightly-2024-07-02
    Fetching advisory database from `[https://github.com/RustSec/advisory-db.git`](https://github.com/RustSec/advisory-db.git%60)
      Loaded 658 security advisories (from ./target/advisory-db)
    Updating crates.io index
    Scanning Cargo.lock for vulnerabilities (1413 crate dependencies)
Crate:     quinn-proto
Version:   0.11.6
Title:     `Endpoint::retry()` calls can lead to panicking
Date:      2024-09-02
ID:        RUSTSEC-2024-0373
URL:       https://rustsec.org/advisories/RUSTSEC-2024-0373
Severity:  7.5 (high)
Solution:  Upgrade to >=0.11.7

Tests

• [ ] Unit Test
• [ ] Logic Test
• [ ] Benchmark Test
• [x] No Test - Explain why

Type of change

• [ ] Bug Fix (non-breaking change which fixes an issue)
• [ ] New Feature (non-breaking change which adds functionality)
• [ ] Breaking Change (fix or feature that could cause existing functionality not to work as expected)
• [ ] Documentation Update
• [ ] Refactoring
• [ ] Performance Improvement
• [x] Other (chore bump version):

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This change is 

[Xuanwo]

cc @BohuTANG, please merge this PR manually. Our merge queue consistently fails due to a check on the main branch.