build(deps): bump slab to 0.4.11

[fnichol]

Updated with:

cargo update -p slab --precise 0.4.11
buck2 run support/buck2:sync-cargo-deps

References: https://github.com/systeminit/si/security/dependabot/428

[github-actions]

Dependency Review

✅ No vulnerabilities or OpenSSF Scorecard issues found.

OpenSSF Scorecard

Package	Version	Score	Details
cargo/slab	0.4.11	🟢 5.4	Details Check Score Reason Code-Review 🟢 9 Found 27/28 approved changesets -- score normalized to 9 Dangerous-Workflow 🟢 10 no dangerous workflow patterns detected Binary-Artifacts 🟢 10 no binaries found in the repo Security-Policy 🟢 9 security policy file detected Maintained 🟢 3 4 commit(s) and 0 issue activity found in the last 90 days -- score normalized to 3 Packaging ⚠️ -1 packaging workflow not detected Token-Permissions ⚠️ 0 detected GitHub workflow tokens with excessive permissions Pinned-Dependencies ⚠️ 0 dependency not pinned by hash detected -- score normalized to 0 CII-Best-Practices ⚠️ 0 no effort to earn an OpenSSF best practices badge detected Vulnerabilities 🟢 10 0 existing vulnerabilities detected Fuzzing ⚠️ 0 project is not fuzzed License 🟢 10 license file detected Branch-Protection 🟢 3 branch protection is not maximal on development and all release branches Signed-Releases ⚠️ -1 no releases found SAST ⚠️ 0 SAST tool is not run on all commits -- score normalized to 0

Scanned Files

• Cargo.lock