deps(backend)(deps): bump futures from 0.3.32 to 0.3.33 in /backend

[dependabot]

Bumps futures from 0.3.32 to 0.3.33.

Release notes

Sourced from futures's releases.

0.3.33

• Fix ReadLine's soundness issue regarding to exception safety. (#3020)
• Fix unsound Send impl for IterPinRef and Iter. (#3003)
• Fix stacked borrows violation in compat01as03 implementation. (#3012)
• Fix memory leak in FuturesUnordered::IntoIter. (#3005)
• Add portable-atomic-alloc feature and use it in FuturesUnordered. (#3007)
• Re-export alloc::task::Wake. (#3010)
• Update spin to 0.12. (#3014)

Changelog

Sourced from futures's changelog.

0.3.33 - 2026-07-18

• Fix ReadLine's soundness issue regarding to exception safety. (#3020)
• Fix unsound Send impl for IterPinRef and Iter. (#3003)
• Fix stacked borrows violation in compat01as03 implementation. (#3012)
• Fix memory leak in FuturesUnordered::IntoIter. (#3005)
• Add portable-atomic-alloc feature and use it in FuturesUnordered. (#3007)
• Re-export alloc::task::Wake. (#3010)
• Update spin to 0.12. (#3014)

Commits

• 89cc254 Release 0.3.33
• cd9f5be ci: Update release workflow
• d79a499 Resolve rustdoc::broken_intra_doc_links warning
• 95bbcf8 Resolve rustdoc ambiguous link error
• 303c165 Resolve rustdoc::redundant_explicit_links warning
• f34e3f5 ci: Cleanup
• 66591a2 Enable Miri for more tests
• ab1072f Simplify target_has_atomic cfg in utility crates
• cf5d23b Fix unsound compat01as03 implementation (fixes #2514) (#3012)
• 8ae794f Add portable-atomic-alloc feature and use it in FuturesUnordered (#3007)
• Additional commits viewable in compare view

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[pacphi]

✅ Snyk checks have passed. No issues have been found so far.

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[pacphi]

Superseded by #268, which consolidates this bump (latest-compatible) along with the other open PRs into a single branch. Closing in favor of #268.

[dependabot]

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