build: Enable strict concurrency checking

NeedleInAJayStack · NeedleInAJayStack · commit 6429cb48428c · 2025-08-30T16:23:44.000-06:00
diff --git a/Package.swift b/Package.swift
@@ -76,5 +76,6 @@ let package = Package(
                 .product(name: "VaporTesting", package: "vapor", condition: .when(traits: ["ServerVapor"])),
             ]
         ),
-    ]
+    ],
+    swiftLanguageModes: [.v5, .version("6")]
 )

Original file line number	Diff line number	Diff line change
`@@ -76,5 +76,6 @@ let package = Package(`
`76`	`76`	`.product(name: "VaporTesting", package: "vapor", condition: .when(traits: ["ServerVapor"])),`
`77`	`77`	`]`
`78`	`78`	`),`
`79`		`- ]`
	`79`	`+ ],`
	`80`	`+ swiftLanguageModes: [.v5, .version("6")]`
`80`	`81`	`)`