build(deps): bump rand from 0.8.6 to 0.9.4

[dependabot]

Bumps rand from 0.8.6 to 0.9.4.

Changelog

Sourced from rand's changelog.

[0.9.4] — 2026-04-13

Fixes

• Fix doc build (#1766)

#1766: rust-random/rand#1766

[0.9.3] — 2026-04-11

This release back-ports a fix from v0.10. See also #1763.

Changes

• Deprecate feature log (#1764)
• Replace usages of doc_auto_cfg (#1764)

#1763: rust-random/rand#1763

[0.9.2] — 2025-07-20

Deprecated

• Deprecate rand::rngs::mock module and StepRng generator (#1634)

Additions

• Enable WeightedIndex<usize> (de)serialization (#1646)

[0.9.1] - 2025-04-17

Security and unsafe

• Revise "not a crypto library" policy again (#1565)
• Remove zerocopy dependency from rand (#1579)

Fixes

• Fix feature simd_support for recent nightly rust (#1586)

Changes

• Allow fn rand::seq::index::sample_weighted and fn IndexedRandom::choose_multiple_weighted to return fewer than amount results (#1623), reverting an undocumented change (#1382) to the previous release.

Additions

• Add rand::distr::Alphabetic distribution. (#1587)
• Re-export rand_core (#1604)

[0.9.0] - 2025-01-27

Security and unsafe

• Policy: "rand is not a crypto library" (#1514)
• Remove fork-protection from ReseedingRng and ThreadRng. Instead, it is recommended to call ThreadRng::reseed on fork. (#1379)
• Use zerocopy to replace some unsafe code (#1349, #1393, #1446, #1502)

Dependencies

• Bump the MSRV to 1.63.0 (#1207, #1246, #1269, #1341, #1416, #1536); note that 1.60.0 may work for dependents when using --ignore-rust-version
• Update to rand_core v0.9.0 (#1558)

Features

• Support std feature without getrandom or rand_chacha (#1354)
• Enable feature small_rng by default (#1455)

... (truncated)

Commits

• ba4c4c6 Prepare v0.9.4: fix doc build (#1766)
• 4b8b686 Document new error-handling behaviour for ReseedingRng
• 6c25c6d Prepare v0.9.4: fix doc build
• 1aeee9f Prepare v0.9.3: deprecate feature log (#1764)
• 98473ee Prepare rand 0.9.2 (#1648)
• 031a1f5 examples/print-next.rs (#1647)
• 6cb75ee Make UniformUsize serializable (#1646)
• 0c955c5 Add some tests for BlockRng, BlockRng64 and Xoshiro RNGs (#1639)
• 204084a Fix: Remove accidental editor swap file (#1636)
• 86262ac Deprecate rand::rngs::mock module and StepRng (#1634)
• Additional commits viewable in compare view

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[rominf]

Pushed a migration commit onto this branch so the bump can land.

rand 0.9 renames distributions → distr and thread_rng() → rng(), which
is the mechanical part. The RSA keypair generator needed more thought: rsa 0.9
is built against rand_core 0.6 while rand 0.9 moved to rand_core 0.9, and the
two trait sets aren't interchangeable — an rng from rand::rng() no longer
satisfies RsaPrivateKey::new. It now takes the rng from the rand_core that
rsa itself re-exports, so the versions stay matched by construction whichever
way either crate moves next.

MANIFEST.md and THIRD_PARTY_NOTICES.txt are regenerated in the same commit.

Two notes:

• Dependabot stops managing a branch once someone else commits to it, so
  @dependabot rebase won't work here any more. Use the merge queue or
  "Update branch".
• E2E tests (GPU) is red, and it is not this change: the same scenario
  (serve-hf-checkpoint-inference) is already failing on main — see run
  31643703431, which predates this commit. Every other check is green.