Bump syn from 1.0.100 to 1.0.105

[dependabot[bot]]

Bumps syn from 1.0.100 to 1.0.105.

Release notes

Sourced from syn's releases.

1.0.105

• Improve parse errors related to dyn and impl type syntax (#1245)

1.0.104

• Add PathArguments::is_none()

1.0.103

• Implement PartialOrd for Cursor (#1236, #1237, thanks @​CAD97)

1.0.102

• More efficient internal representation for TokenBuffer (#1223, thanks @​CAD97)
• Fix parsing of a left shift after macro metavariable in type position (#1229)

1.0.101

• Eliminate a bunch of redundant work done by LitStr::parse (#1221)

Commits

• 998e863 Release 1.0.105
• 02e2a21 Merge pull request #1247 from dtolnay/punctdrop
• 9113ad0 Help infer may_dangle on type parameter of Punctuated iterator Drop impls
• 3eaa443 Add regression test for issue 1246
• 17f9a5c Merge pull request #1245 from dtolnay/bounds
• db874dd Improve dyn/impl-related parse errors
• b8b0761 Move TypeParamBound parse loop to associated function
• 3e915e5 Clean up naming in rustc syntax tree manipulation
• ecacc47 Import token::Lit now there's no conflict with MetaItemLit
• 2647b2a Update test suite to nightly-2022-11-29
• Additional commits viewable in compare view

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