LuciferYang opened a new pull request, #56696:
URL: https://github.com/apache/spark/pull/56696

   ### What changes were proposed in this pull request?
   
   This PR upgrades the `concurrent-ruby` gem from 1.3.5 to 1.3.7 in 
`docs/Gemfile.lock`. It is a transitive dependency (pulled in by `i18n`), and 
1.3.7 satisfies i18n's `concurrent-ruby (~> 1.0)` constraint, so only the 
locked spec version changes.
   
   ### Why are the changes needed?
   
   1.3.7 fixes three security advisories that affect all earlier versions (`< 
1.3.7`):
   
   - [GHSA-h8w8-99g7-qmvj](https://github.com/advisories/GHSA-h8w8-99g7-qmvj) / 
CVE-2026-54904 (high): `AtomicReference#update` livelocks when the stored value 
is `Float::NAN`.
   - [GHSA-wv3x-4vxv-whpp](https://github.com/advisories/GHSA-wv3x-4vxv-whpp) / 
CVE-2026-54905 (low): `ReentrantReadWriteLock` read-count overflow grants a 
write lock without exclusivity.
   - [GHSA-6wx8-w4f5-wwcr](https://github.com/advisories/GHSA-6wx8-w4f5-wwcr) / 
CVE-2026-54906 (low): `ReadWriteLock` allows wrong-thread write release and 
stray read-release counter corruption.
   
   ### Does this PR introduce _any_ user-facing change?
   
   No. This only affects the documentation build toolchain.
   
   ### How was this patch tested?
   
   N/A - this is a lock-file-only dependency bump for the docs build. 
`concurrent-ruby` has no runtime dependencies, so no other lock entries change.
   
   ### Was this patch authored or co-authored using generative AI tooling?
   
   No.
   


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