Bump paste from 1.0.14 to 1.0.15 in /rust

[dependabot[bot]]

Bumps paste from 1.0.14 to 1.0.15.

Release notes

Sourced from paste's releases.

1.0.15

• Resolve unexpected_cfgs warning (#102)

Commits

• a2c7e27 Release 1.0.15
• 1d23098 Merge pull request #102 from dtolnay/checkcfg
• 1edfaae Resolve unexpected_cfgs warning
• cc6803d Explicitly install a Rust toolchain for cargo-outdated job
• d39fb86 Ignore dead code lint in tests
• 14872ad Work around empty_docs clippy lint in test
• ed844dc Work around dead_code warning in test
• 0a4161b Add cargo.toml metadata to link to crate documentation
• 5a2bce1 Test docs.rs documentation build in CI
• d7e0be1 Update actions/checkout@v3 -> v4
• Additional commits viewable in compare view

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