swift-system - use main

Author: owenv

Package.swift

@@ -447,7 +447,7 @@ if useLocalDependencies {
         // 3.7.1 introduced a regression which fails to link on aarch64-windows; revert to <4.0.0 for the upper bound when this is fixed
         .package(url: "https://github.com/apple/swift-crypto.git", "2.0.0"..<"3.7.1"),
         .package(url: "https://github.com/apple/swift-driver.git", branch: "main"),
-        .package(url: "https://github.com/apple/swift-system.git", .upToNextMajor(from: "1.4.0")),
+        .package(url: "https://github.com/apple/swift-system.git", branch: "main"),
         .package(url: "https://github.com/apple/swift-argument-parser.git", from: "1.0.3"),
     ]
     if !useLLBuildFramework {