build(deps): bump syn from 1.0.109 to 2.0.40

[dependabot[bot]]

Bumps syn from 1.0.109 to 2.0.40.

Release notes

Sourced from syn's releases.

2.0.40

• Fix some edge cases of handling None-delimited groups in expression parser (#1539, #1541, #1542, #1543, #1544, #1545)

2.0.39

• Fix parsing of return expression in match guards (#1528)
• Improve error message on labeled loop as value expression for break (#1531)

2.0.38

• Fix "method 'peek' has an incompatible type for trait" error when defining bool as a custom keyword (#1518, thanks @​Vanille-N)

2.0.37

• Work around incorrect future compatibility warning in rustc 1.74.0-nightly

2.0.36

• Restore compatibility with --generate-link-to-definition documentation builds (#1514)

2.0.35

• Make rust-analyzer produce preferred brackets for invocations of Token! macro (#1510, #1512)

2.0.34

• Documentation improvements

2.0.33

• Special handling for the (/*ERROR*/) placeholder that rustc uses for macros that fail to expand

2.0.32

• Add Path::require_ident accessor (#1496, thanks @​Fancyflame)

2.0.31

• Parse generics and where-clause on const items (rust-lang/rust#113521)

2.0.30

• Parse unnamed struct/union type syntax (rust-lang/rust#49804)

2.0.29

• Partially work around rust-analyzer bug (rust-lang/rust-analyzer#9911)

2.0.28

• Fix inconsistency between full and non-full expression parse errors (#1491)

2.0.27

• Documentation improvements (thanks @​GuillaumeGomez)

2.0.26

• Implement Spanned for QSelf (#1465)

2.0.25

• Support single identifier as unbraced const generic argument (#1483)
• Produce error message when LitStr::parse is used on a suffixed string literal (#1484)

... (truncated)

Commits

• cf7f40a Release 2.0.40
• 1ce8ccf Merge pull request #1538 from dtolnay/testinvisible
• d06bff8 Add test for parsing Delimiter::None in expressions
• 9ec66d4 Merge pull request #1545 from dtolnay/groupedlet
• 384621a Fix None-delimited let expression in stmt position
• 5325b6d Add test of let expr surrounded in None-delimited group
• 0ddfc27 Merge pull request #1544 from dtolnay/nonedelimloop
• 9c99b3f Fix stmt boundary after None-delimited group containing loop
• 2781584 Add test of None-delimited group containing loop in match arm
• d332928 Simplify token stream construction in Delimiter::None tests
• Additional commits viewable in compare view

You can trigger a rebase of this PR by commenting @dependabot rebase.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR: - `@dependabot rebase` will rebase this PR - `@dependabot recreate` will recreate this PR, overwriting any edits that have been made to it - `@dependabot merge` will merge this PR after your CI passes on it - `@dependabot squash and merge` will squash and merge this PR after your CI passes on it - `@dependabot cancel merge` will cancel a previously requested merge and block automerging - `@dependabot reopen` will reopen this PR if it is closed - `@dependabot close` will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually - `@dependabot show ignore conditions` will show all of the ignore conditions of the specified dependency - `@dependabot ignore this major version` will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this minor version` will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself) - `@dependabot ignore this dependency` will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)

Note Automatic rebases have been disabled on this pull request as it has been open for over 30 days.