chore(deps): update rust crate rand to v0.8.6 [security]

[dd-octo-sts]

This PR contains the following updates:

Package	Type	Update	Change
rand (source)	dependencies	patch	0.8.5 → 0.8.6
rand (source)	dev-dependencies	patch	0.8.5 → 0.8.6

🚨 Security Vulnerability Fix

Severity: UNKNOWN

This PR addresses a security vulnerability detected by GitHub Dependabot. Please review and merge promptly.

[dd-octo-sts]

⚠️ Artifact update problem

Renovate failed to update artifacts related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
• you click the rebase/retry checkbox if found above, or
• you rename this PR's title to start with "rebase!" to trigger it manually

The artifact failure details are included below:

File name: Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path Cargo.toml --package rand@0.8.5 --precise 0.8.6
error: rustup could not choose a version of cargo to run, because one wasn't specified explicitly, and no default is configured.
help: run 'rustup default stable' to download the latest stable release of Rust and set it as your default toolchain.

File name: benchmarks/Cargo.lock

Command failed: cargo update --config net.git-fetch-with-cli=true --manifest-path benchmarks/Cargo.toml --package rand@0.8.5 --precise 0.8.6
error: rustup could not choose a version of cargo to run, because one wasn't specified explicitly, and no default is configured.
help: run 'rustup default stable' to download the latest stable release of Rust and set it as your default toolchain.