Bump syn from 1.0.89 to 1.0.91

[dependabot]

Bumps syn from 1.0.89 to 1.0.91.

Release notes

Sourced from syn's releases.

1.0.91

• impl ToTokens for RangeLimits
• impl Parse for ExprAwait
• impl Parse for GenericMethodArgument
• impl Parse for MethodTurbofish

1.0.90

• Update recommended exhaustive matching idiom to use non_exhaustive_omitted_patterns lint:

  match expr {
      Expr::Array(e) => {…}
      Expr::Assign(e) => {…}
      ...
      Expr::Yield(e) => {…}
  #[cfg_attr(test, deny(non_exhaustive_omitted_patterns))]
  _ => {/* some sane fallback */}
  
  }

Commits

• 183e344 Release 1.0.91
• 6ae1c80 impl Parse for MethodTurbofish
• e1ffb07 impl Parse for GenericMethodArgument
• cef0d69 impl Parse for ExprAwait
• 714f868 Sort the Expr variants in impl_by_parsing_expr call
• d94e7f1 Merge pull request #1158 from frank2/rangelimits-to-tokens
• 72e6ffc #1157 implement ToTokens for RangeLimits enum
• 86c9fa4 Merge pull request 1156 from ZuseZ4/patch-1
• 7e58d02 Improve lookahead documentation
• a0f0bb3 Release 1.0.90
• Additional commits viewable in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually 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 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)

[dependabot]

Superseded by #108.