update versions of multiple dependencies.

[carloskiki]

This updates versions of many dependencies, and also updates the crate version.

[Copilot]

Pull Request Overview

This PR migrates from the deprecated random() method to the new try_from_rng() method across all Field and Group implementations, aligning with updates to the ff and group traits. The change updates to pre-release versions of dependencies (ff 0.14.0-pre.0, group 0.14.0-pre.0, pairing 0.24.0-pre.0, and rand_core 0.9) and removes the rust-toolchain file to allow more flexibility in Rust version selection.

Key changes:

• Replaced Field::random(impl RngCore) with Field::try_from_rng(&mut R: TryRngCore + ?Sized) across scalar and field point implementations
• Replaced Group::random(impl RngCore) with Group::try_from_rng(&mut R: TryRngCore + ?Sized) for group elements (G1, G2, Gt)
• Updated dependencies to pre-release versions with breaking trait changes

Reviewed Changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
src/scalar.rs	Replaced Field::random with Field::try_from_rng for Scalar, using try_next_u64 instead of next_u64
src/gt.rs	Replaced Group::random with Group::try_from_rng for Gt and removed unused RngCore import
src/g2.rs	Replaced Group::random with Group::try_from_rng for G2Projective, reordered methods, changed to try_fill_bytes
src/g1.rs	Replaced Group::random with Group::try_from_rng for G1Projective, changed to try_fill_bytes
src/fp6.rs	Replaced Field::random with Field::try_from_rng for Fp6, propagating try_from_rng calls
src/fp2.rs	Replaced Field::random with Field::try_from_rng for Fp2, propagating try_from_rng calls
src/fp12.rs	Replaced Field::random with Field::try_from_rng for Fp12, propagating try_from_rng calls
src/fp.rs	Replaced Field::random with Field::try_from_rng for Fp, using try_next_u64 instead of next_u64
rust-toolchain	Removed file, allowing flexible Rust version selection
Cargo.toml	Updated version to 0.8.0-pre.0 and upgraded dependencies to pre-release versions

Comments suppressed due to low confidence (7)

src/fp.rs:11

• The RngCore import is no longer used in this file since the implementation now only uses rand_core::TryRngCore. This unused import should be removed to maintain code cleanliness.

use rand_core::RngCore;

src/fp2.rs:11

• The RngCore import is no longer used in this file since the implementation now only uses rand_core::TryRngCore. This unused import should be removed to maintain code cleanliness.

use rand_core::RngCore;

src/fp6.rs:16

• The RngCore import is no longer used in this file since the implementation now only uses rand_core::TryRngCore. This unused import should be removed to maintain code cleanliness.

use rand_core::RngCore;

src/fp12.rs:11

• The RngCore import is no longer used in this file since the implementation now only uses rand_core::TryRngCore. This unused import should be removed to maintain code cleanliness.

use rand_core::RngCore;

src/scalar.rs:16

• The RngCore import is no longer used in this file since the implementation now only uses rand_core::TryRngCore. This unused import should be removed to maintain code cleanliness.

use rand_core::RngCore;

src/g1.rs:16

• The RngCore import is no longer used in this file since the implementation now only uses rand_core::TryRngCore. This unused import should be removed to maintain code cleanliness.

use rand_core::RngCore;

src/g2.rs:15

• The RngCore import is no longer used in this file since the implementation now only uses rand_core::TryRngCore. This unused import should be removed to maintain code cleanliness.

use rand_core::RngCore;

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