Update Rust crate rand to 0.8.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
rand (source)	dependencies	minor	0.7.3 -> 0.8.5

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Release Notes

rust-random/rand

v0.8.5

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Fixes

• Fix build on non-32/64-bit architectures (#​1144)
• Fix "min_const_gen" feature for no_std (#​1173)
• Check libc::pthread_atfork return value with panic on error (#​1178)
• More robust reseeding in case ReseedingRng is used from a fork handler (#​1178)
• Fix nightly: remove unused slice_partition_at_index feature (#​1215)
• Fix nightly + simd_support: update packed_simd (#​1216)

Rngs

• StdRng: Switch from HC128 to ChaCha12 on emscripten (#​1142).
  We now use ChaCha12 on all platforms.

Documentation

• Added docs about rand's use of const generics (#​1150)
• Better random chars example (#​1157)

v0.8.4

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Additions

• Use const-generics to support arrays of all sizes (#​1104)
• Implement Clone and Copy for Alphanumeric (#​1126)
• Add Distribution::map to derive a distribution using a closure (#​1129)
• Add Slice distribution (#​1107)
• Add DistString trait with impls for Standard and Alphanumeric (#​1133)

Other

• Reorder asserts in Uniform float distributions for easier debugging of non-finite arguments
  (#​1094, #​1108)
• Add range overflow check in Uniform float distributions (#​1108)
• Deprecate rngs::adapter::ReadRng (#​1130)

v0.8.3

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Fixes

• Fix no-std + alloc build by gating choose_multiple_weighted on std (#​1088)

v0.8.2

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Fixes

• Fix panic in UniformInt::sample_single_inclusive and Rng::gen_range when
  providing a full integer range (eg 0..=MAX) (#​1087)

v0.8.1

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Other

• Enable all stable features in the playground (#​1081)

v0.8.0

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Platform support

• The minimum supported Rust version is now 1.36 (#​1011)
• getrandom updated to v0.2 (#​1041)
• Remove wasm-bindgen and stdweb feature flags. For details of WASM support,
  see the getrandom documentation. (#​948)
• ReadRng::next_u32 and next_u64 now use little-Endian conversion instead
  of native-Endian, affecting results on Big-Endian platforms (#​1061)
• The nightly feature no longer implies the simd_support feature (#​1048)
• Fix simd_support feature to work on current nightlies (#​1056)

Rngs

• ThreadRng is no longer Copy to enable safe usage within thread-local destructors (#​1035)
• gen_range(a, b) was replaced with gen_range(a..b). gen_range(a..=b) is
  also supported. Note that a and b can no longer be references or SIMD types. (#​744, #​1003)
• Replace AsByteSliceMut with Fill and add support for [bool], [char], [f32], [f64] (#​940)
• Restrict rand::rngs::adapter to std (#​1027; see also #​928)
• StdRng: add new std_rng feature flag (enabled by default, but might need
  to be used if disabling default crate features) (#​948)
• StdRng: Switch from ChaCha20 to ChaCha12 for better performance (#​1028)
• SmallRng: Replace PCG algorithm with xoshiro{128,256}++ (#​1038)

Sequences

• Add IteratorRandom::choose_stable as an alternative to choose which does
  not depend on size hints (#​1057)
• Improve accuracy and performance of IteratorRandom::choose (#​1059)
• Implement IntoIterator for IndexVec, replacing the into_iter method (#​1007)
• Add value stability tests for seq module (#​933)

Misc

• Support PartialEq and Eq for StdRng, SmallRng and StepRng (#​979)
• Added a serde1 feature and added Serialize/Deserialize to UniformInt and WeightedIndex (#​974)
• Drop some unsafe code (#​962, #​963, #​1011)
• Reduce packaged crate size (#​983)
• Migrate to GitHub Actions from Travis+AppVeyor (#​1073)

Distributions

• Alphanumeric samples bytes instead of chars (#​935)
• Uniform now supports char, enabling rng.gen_range('A'..='Z') (#​1068)
• Add UniformSampler::sample_single_inclusive (#​1003)

Weighted sampling

• Implement weighted sampling without replacement (#​976, #​1013)
• rand::distributions::alias_method::WeightedIndex was moved to rand_distr::WeightedAliasIndex.
  The simpler alternative rand::distribution::WeightedIndex remains. (#​945)
• Improve treatment of rounding errors in WeightedIndex::update_weights (#​956)
• WeightedIndex: return error on NaN instead of panic (#​1005)

Documentation

• Document types supported by random (#​994)
• Document notes on password generation (#​995)
• Note that SmallRng may not be the best choice for performance and in some
  other cases (#​1038)
• Use doc(cfg) to annotate feature-gated items (#​1019)
• Adjust README (#​1065)

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