Bump quote from 1.0.21 to 1.0.28

[dependabot[bot]]

Bumps quote from 1.0.21 to 1.0.28.

Release notes

Sourced from quote's releases.

1.0.28

• Enable proc_macro support on wasm targets (#254)

1.0.27

• Documentation improvements

1.0.26

• Improve error message on incorrectly typed span (#247)

1.0.25

• Generalize quote_spanned! to accept DelimSpan as span (#239)

1.0.24

• Documentation improvements

1.0.23

• Opt out of -Zrustdoc-scrape-examples on docs.rs for now

1.0.22

• Documentation improvements

Commits

• f559bb7 Release 1.0.28
• 8c85183 Merge pull request #254 from dtolnay/wasm
• 0538513 Extern crate proc_macro available on all wasm targets
• a312270 Show error details during miri setup in CI
• c066ee6 Release 1.0.27
• c52d219 Fix broken link to format_ident macro documentation
• 05afe13 Copy non-macro code generators paragraph from readme to rustdoc
• a901e98 Remove mention of rustfmt
• 37a0e2e Merge pull request #251 from Emilgardis/mention-prettyplease
• aeceb61 mention prettyplease for formatting generated code
• Additional commits viewable in compare view

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