build: fix the 6.0 build, there's no package traits below 6.1

Author: ktoso

Package.swift

@@ -79,11 +79,8 @@ let package = Package(
                 .product(name: "Atomics", package: "swift-atomics"),
                 .product(name: "Algorithms", package: "swift-algorithms"),
                 // Observability support
-                .product(
-                    name: "Tracing",
-                    package: "swift-distributed-tracing",
-                    condition: .when(traits: ["TracingSupport"])
-                ),
+                .product(name: "Tracing", package: "swift-distributed-tracing"),
+                .product(name: "InMemoryTracing", package: "swift-distributed-tracing"),
             ],
             swiftSettings: strictConcurrencySettings
         ),
@@ -102,7 +99,10 @@ let package = Package(
                 .product(name: "NIOSOCKS", package: "swift-nio-extras"),
                 .product(name: "Logging", package: "swift-log"),
                 .product(name: "Atomics", package: "swift-atomics"),
-                .product(name: "Algorithms", package: "swift-algorithms"),
+                .product(name: "Algorithms", package: "swift-algorithms"),              
+                // Observability support
+                .product(name: "Tracing", package: "swift-distributed-tracing"),
+                .product(name: "InMemoryTracing", package: "swift-distributed-tracing"),
             ],
             resources: [
                 .copy("Resources/self_signed_cert.pem"),