chore(deps): bump proc-macro2 from 1.0.81 to 1.0.83

[dependabot[bot]]

Bumps proc-macro2 from 1.0.81 to 1.0.83.

Release notes

Sourced from proc-macro2's releases.

1.0.83

• Optimize the representation of Ident (#462)

1.0.82

• Resolve unexpected_cfgs warning (#456)

Commits

• 1b77aca Release 1.0.83
• 728eddf Merge pull request #462 from dtolnay/identsize
• c56c5e6 Drop irrelevant capacity field from Ident representation
• 464c2eb Merge pull request #461 from dtolnay/sizetest
• 6f894e7 Disable span size tests when layout is randomized
• 7b357af Add additional size tests
• abc7dff Merge pull request #460 from dtolnay/docsrs
• f8d88f3 Rely on docs.rs to define --cfg=docsrs by default
• 8dc63f3 Release 1.0.82
• 790cb41 Merge pull request #457 from dtolnay/defaultfeatures
• Additional commits viewable in compare view

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