Bump syn from 2.0.38 to 2.0.39

[dependabot[bot]]

Bumps syn from 2.0.38 to 2.0.39.

Release notes

Sourced from syn's releases.

2.0.39

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

Commits

• 924217c Release 2.0.39
• 95aeeb5 Merge pull request #1531 from dtolnay/breaklabel
• b88f86f Ignore single_element_loop clippy lint in test
• a876185 Improve error on break followed by labeled loop
• 32ab979 Add test of ambiguous label parsing in break
• 6f658f8 Merge pull request #1530 from dtolnay/canbeginexpr
• 20497e1 More precise decision to parse expression after return keyword
• c6a651a Update name of ExprReturn parse function to match variant name
• c274590 Indicate that peek argument refers to syn::Ident
• 3e67cb0 Merge pull request #1529 from dtolnay/up
• Additional commits viewable in compare view

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[codecov[bot]]

Codecov Report

Merging #181 (54ab440) into main (f3ef55f) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #181   +/-   ##
=======================================
  Coverage   91.65%   91.65%           
=======================================
  Files          14       14           
  Lines        1126     1126           
=======================================
  Hits         1032     1032           
  Misses         94       94           

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[dependabot[bot]]

Superseded by #191.