chore: Bump proc-macro2 from 1.0.82 to 1.0.86

[dependabot[bot]]

Bumps proc-macro2 from 1.0.82 to 1.0.86.

Release notes

Sourced from proc-macro2's releases.

1.0.86

• Documentation improvements

1.0.85

• Mark some tests as only for 64-bit targets (#463)

1.0.84

• Documentation improvements (#455, thanks @​CensoredUsername)

1.0.83

• Optimize the representation of Ident (#462)

Commits

• aa9476b Release 1.0.86
• 1961358 Merge pull request #466 from dtolnay/buildrs
• e1bd2cc Bring build script comments up to date
• 5b27127 Merge pull request #465 from dtolnay/ignorereason
• 0da4629 Fill in ignore reasons in all #[ignore] attributes
• 5ee1cab Release 1.0.85
• aa64c20 Merge pull request #464 from dtolnay/testsize
• bc9f4d9 Ignore size tests on non-64bit target
• 1160ec3 Make size tests #[ignore] in cfg(randomize_layout)
• 33c9578 Release 1.0.84
• Additional commits viewable in compare view

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