Specify language modes

Author: AndrewBarba

Package.swift

@@ -14,7 +14,7 @@ let package = Package(
         .library(name: "Compute", targets: ["Compute"])
     ],
     dependencies: [
-        .package(url: "https://github.com/apple/swift-crypto", from: "3.0.0")
+        .package(url: "https://github.com/apple/swift-crypto", "1.0.0"..<"4.0.0")
     ],
     targets: [
         .target(
@@ -35,5 +35,9 @@ let package = Package(
             name: "ComputeTests",
             dependencies: ["Compute"]
         ),
+    ],
+    swiftLanguageVersions: [
+        .version("6"),
+        .v5,
     ]
 )