Test building BridgeJSTool on macOS on CI

[MaxDesiatov]

This exposes build errors on macOS that aren't reproducible on Linux.

Lowered SwiftSyntax dependency range to 601 due to following error with 602:

ImportTS.swift:736:16: error: no exact matches in call to initializer 
734 |     /// Builds the standard @_expose and @_cdecl attributes for WebAssembly-exposed functions
735 |     static func buildExposeAttributes(abiName: String) -> AttributeListSyntax {
736 |         return AttributeListSyntax {
    |                `- error: no exact matches in call to initializer 
737 |             AttributeSyntax(
738 |                 attributeName: IdentifierTypeSyntax(name: .identifier("_expose")),

[kateinoigakukun]

Is it hard to fix the 6.2 compatibility issue instead of narrowing the range?

[MaxDesiatov]

Is it hard to fix the 6.2 compatibility issue instead of narrowing the range?

So far I've not found the root cause. I suggest fixing compatibility in a follow-up PR, otherwise BridgeJS is currently unusable on the main branch, as we resolve to incompatible 6.2 version of SwiftSyntax by default.