Bump proc-macro2 from 1.0.56 to 1.0.66

[dependabot[bot]]

Bumps proc-macro2 from 1.0.56 to 1.0.66.

Release notes

Sourced from proc-macro2's releases.

1.0.65

• Documentation improvements

1.0.64

• Fix parsing of bare \r in between tokens (#399)

1.0.63

• Parse c"…" c-string literals (tracking issue: rust-lang/rust#105723)

1.0.62

yanked

1.0.61

• Stricter parsing of whitespace in cooked string literals and between tokens (#392, #393)

1.0.60

• Eliminate uses of unstable proc_macro::Span::before/after (#391)

1.0.59

• Enable proc_macro support on wasm targets (#388)

1.0.58

• Make rustc version detection more robust by compiling against modernest stable features (#384)

1.0.57

• Disable nightly-only start()/end() implementation on Span while the upstream API is iterated on (#383, rust-lang/rust#111571)

Commits

• 64b4608 Release 1.0.66
• 11d8cab Update supported compiler in description of semver exempt polyfill
• fc8af0d Revert "Fix test failure due to quoting change in str's Debug"
• 177c700 Import from alloc to make remaining std dependencies clear
• 00360bc Delete no_group_open_close config for rustc older than 1.55
• 346cc05 Inline compiler_literal_from_str
• 2d8dd97 Delete no_literal_from_str config for rustc older than 1.54
• 3f96a77 Delete no_ident_new_raw config for rustc older than 1.47
• 56c04ea Delete no_hygiene config for rustc older than 1.45
• 467a0b4 Delete no_lexerror_display config for rustc older than 1.44
• Additional commits viewable in compare view

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